Team Fortress 2

Stab an enemy to death while under the influence of Jarate.

While using the Back Scatter, kill 20 friends from behind.

Backstab 3 enemies within 10 seconds.

While using The Classic, kill 10 enemies with a full charge, no-scope headshot.

Backstab 1000 enemies.

While using The Classic, kill a rocket/grenade jumping enemy in midair with a full charge, no-scope headshot.

Destroy 1000 Engineer buildings with sappers.

While using The Classic, gib all 9 classes during a single round.

Sap an enemy sentry gun within 3 seconds of a teammate sapping another.

Kill 3 players during the same parachute deploy.

Backstab a Medic that is ready to deploy an ÜberCharge.

Parachute 19.47 miles.

Backstab 50 enemies who are capturing control points.

Kill a parachuting player while parachuting.

Backstab an enemy, who then switches to Pyro before they respawn.

Kill 3 players during the same parachute deploy.

Kill 50 enemies with the Ambassador.

Parachute 19.47 miles.

While using the Ambassador, kill 20 Snipers with a headshot.

Kill a parachuting player while parachuting.

Kill an enemy who triggered your feign death in the last 20 seconds.

Kill an enemy that you couldn't see at the beginning of your charge.

Headshot 3 Scouts with the Ambassador.

Get 3 kills within 6 seconds using the Demoman charge.

While using the Cloak and Dagger, kill the same enemy 3 times, all within the same area in a single life.

Kill a charging Demoman while charging.

Backstab a Scout that is using the Back Scatter.

Achieve 11 of the achievements in the Sniper pack.

Collect enough casualties to get the max clip for the Air Strike.

Achieve 17 of the achievements in the Sniper pack.

Kill 3 people with the Air Strike during a single rocket jump.

Achieve 5 of the achievements in the Spy pack.

Kill 25 parachuting players with a critical headshot.

Achieve 11 of the achievements in the Spy pack.

Kill 3 players who are doing the Conga within 5 seconds.

Achieve 17 of the achievements in the Spy pack.

Do the Conga with 10 or more players at the same time.

Collect 20 Halloween pumpkins from dead players to unlock a hat.

Lose at Rock, Paper, Scissors 3 times in a row with Rock.

Win at Rock, Paper, Scissors 3 times in a row with Scissors.

Kill a player scared by a ghost.

Melee kill 10 players while they are doing the Square Dance taunt.

Cause the deaths of 5 players by exploding nearby pumpkin bombs.

Do 10 partner taunts with a teammate while capturing a control point.

Ignite a player that is being flipped by someone using the Flippin' Awesome taunt.

Kill 30 enemies by bumping their bumper cars off the tracks.

Achieve 11 of the achievements in the Soldier pack.

Collect 250 ducks.

Achieve 17 of the achievements in the Soldier pack.

Score 3 goals in bumper car soccer.

Kill 3 enemies with a single critical rocket.

Respawn 30 ghost teammates during bumper car games.

Rocket jump and kill 2 enemies before you land.

Kill 15 enemies while under the effect of Merasmus's melee-only curse.

Earn 4 of the Carnival of Carnage achievements.

Play a complete round with every class.

Win each of the 3 bumper car games to earn a bonus Halloween Gift Cauldron.

Play a complete game on 2Fort, Dustbowl, Granary, Gravel Pit, Hydro, and Well (CP).

Use a grenade to gib a player.

Win 142 Rounds.

Accumulate 25000 heal points as a Medic.

Kill 5 Engineer sentries while you are standing outside of their range.

Win a round in which the enemy team has attempted to capture your final control point.

Kill an enemy sniper with a rocket after he kills you.

Capture the final control point within 15 seconds of your team capturing the previous control point.

Accumulate 10 sentry gun kills with a single sentry.

Kill 15 enemies while they are capturing a point.

Kill an Engineer as he repairs his sentry gun while it's under enemy fire.

Kill five enemies while they are in the water.

Kill your nemesis with a shovel.

Reveal the mystery of the PASS Time TV Room.

Destroy 10 stickybombs with the shotgun in a single life.

Win 10 rounds playing PASS Time.

Play in a game with five or more players from your Friends list.

Get the highest possible rocket jump using jump and crouch.

Win 20 games.

Buff 5 Steam friends at once with the Buff Banner.

Accumulate 1000 total kills.

Play a full round without killing any enemies, and score the highest on a team of 6 or more players.

Kill 3 defenseless players after a single match has ended.

Work with 2 other Medics to deploy 3 simultaneous ÜberCharges.

Kill 5 stunned or slowed players.

Have an ÜberCharge ready before the Setup phase ends.

Provide the enemy with a freezecam of you taunting over 3 of their body parts.

Deploy 3 ÜberCharges in less than 5 minutes, and assist in 5 kills during that time.

Kill a Spy who just backstabbed a teammate.

Deploy an ÜberCharge within 8 seconds of a nearby enemy Medic deploying his.

Defend a cap point 30 times.

In a team with no Medics, be the first person to switch to Medic after a teammate calls for 'Medic!', and then heal 500 health.

Gib 1000 people.

Deploy an ÜberCharge on a teammate less than a second before they're hit by a critical explosive.

While rocket jumping kill an enemy with the Equalizer before you land or just after landing.

Block the enemy from capturing a control point with an ÜberCharged teammate.

Buff 15 teammates with the Buff Banner in a single life.

Assist a fellow Medic in killing 3 enemies in a single life.

Kill 500 enemy Demomen

Kill 50 Scouts with your syringe gun.

Kill a Pyro who has airblasted one of your rockets in the last 10 seconds.

Kill 10 Medics with your bone saw.

Kill 3 players with the Equalizer in a single life without being healed.

Assist a Heavy in killing 10 enemies, where neither of you die.

Kill 20 enemies with your Equalizer while you have less than 25 health.

Assist in killing 3 enemies with a single ÜberCharge on a Scout.

Bounce an opponent into the air with a rocket and then kill them with the shotgun before they land.

Assist in burning 5 enemies with a single ÜberCharge on a Pyro.

Kill 10 opponents who are airborne with the Direct Hit.

Assist in punching 2 enemies with a single ÜberCharge on a Heavy.

Provide the enemy with a freezecam of your 21 gun salute.

Assist in destroying 5 enemy Engineer buildings with a single ÜberCharge on a Demoman.

Kill 10 enemies while assisting or being assisted by another Soldier.

Heal an Engineer as he repairs his sentry gun while it's under enemy fire.

Finish a round as an MVP on a team of 6 or more players 10 times.

Assist in killing 3 enemies on an enemy control point, in a single life.

Ride the cart for 30 seconds.

Heal 200 teammates after they've called for 'Medic!'.

Assist a Medic in exploding 5 enemies with a single ÜberCharge.

Win 2Fort with a shutout.

Kill 500 enemy Soldiers

Win Well in 5 minutes or less.

Destroy 5 enemy Engineer buildings during a single ÜberCharge from a Medic.

Win Hydro without giving up a capture.

Decapitate a cloaked Spy.

Successfully defend Dustbowl without giving up a capture.

Kill 50 enemies with direct hits from the Grenade Launcher.

Successfully defend Gravel Pit without giving up a capture.

Decapitate 50 enemy players.

Extinguish 100 burning teammates.

Decapitate 4 players with only 10 seconds between each kill.

Assist in killing 20 nemeses.

Kill 10 enemies while assisting or being assisted by another Demoman.

Kill 2 enemies in a single life, while having your ÜberCharge ready, but undeployed.

Decapitate an enemy Soldier who is brandishing the Equalizer.

Hit enemies with your bonesaw 5 times in a row without dying or missing.

Get a melee kill while sticky jumping.

Accumulate 7000 heal points in a single life.

Destroy an Engineer building that you can't see with a direct hit from your Grenade Launcher.

Accumulate 10000 heal points health in a single life.

Dominate 3 Engineers.

Accumulate 1 million total heal points.

Kill an enemy player with stickybombs within 5 seconds of them teleporting.

Kill an enemy Spy that you have been healing.

Kill 2 people in a single sticky jump.

Save a falling teammate from dying on impact.

ÜberCharge 2 teammates at once.

Decapitate your nemesis.

Provide an enemy with a freezecam shot of you taunting above their ragdoll.

Do 1 million points of total blast damage.

Use your bonesaw to kill a spy who has been calling for 'Medic!'.

Achieve 5 of the achievements in the Demoman pack.

ÜberCharge 5 of your Steam Community Friends.

Achieve 11 of the achievements in the Demoman pack.

Join a game that one of your friends is in and then deploy an ÜberCharge on him.

Achieve 17 of the achievements in the Demoman pack.

Be healing a teammate as he achieves an achievement of his own.

Blow up an Engineer, his sentry gun, and his dispenser with a single stickybomb detonation.

Assist in exploding 5 enemies with a single ÜberCharge on a Soldier.

Kill 3 enemies capping or pushing a cart in a single stickybomb detonation 3 separate times.

Achieve 10 of the achievements in the Medic pack.

Kill 25 players defending a capture point or cart.

Achieve 16 of the achievements in the Medic pack.

Destroy 50 buildings.

Achieve 22 of the achievements in the Medic pack.

Kill 3 Heavies from full health with a single stickybomb detonation.

Use your shotgun to finish off 20 players you've ignited.

Kill 25 Scouts and Pyros with the Grenade Launcher.

Glory in the slaughter of your enemies using the Eyelander.

Force 10 burning enemies to jump into water.

Charge and kill someone with your shield bash.

Kill 15 players while you're dead.

Use a critical swing with the Eyelander to kill 5 enemy players.

Ignite 5 Spies who have a sapper on a friendly building.

Kill 30 players with air burst stickybombs.

Ignite 5 enemies carrying your intelligence.

Sticky jump onto a cap point and capture it.

Ignite 10 cloaked Spies.

Provide an enemy player with a freezecam of your smiling face.

Ignite 10 enemies that have recently used a teleporter.

Provide an enemy player with a freezecam of you shaking your rump.

Use the Sticky Launcher to kill an enemy player via environmental damage.

Kill 3 people with your axe in one life.

Destroy 100 enemy stickybombs with the Scottish Resistance.

Kill 6 people with your axe in one life.

Sticky jump a really long way...

Ignite 10 disguised Spies.

Kill at least three players with a single detonation of stickybombs.

Ignite 10 Snipers while they are zoomed in.

Kill 20 spies within 5 seconds of them sapping a friendly building.

Using the Scottish Resistance, kill 3 players in separate explosions without placing new stickybombs.

Kill 50 Heavies with your flamethrower.

Use a revenge crit to kill the enemy player that destroyed your sentry gun.

Kill 10 enemies while you're both underwater.

Kill 10 enemies outside the normal sentry gun range using the Wrangler.

Kill 3 enemies in a single ÜberCharge.

Achieve 5 of the achievements in the Engineer pack.

Destroy 50 Engineer buildings.

Achieve 11 of the achievements in the Engineer pack.

Ignite 50 enemies capturing one of your control points.

Achieve 17 of the achievements in the Engineer pack.

Kill 500 enemies.

Teleport 100 team members into battle.

Do 1 million points of total fire damage.

Have dispensers you built extinguish 20 burning players.

Kill an enemy with a taunt.

Kill 3 cloaked Spies with a sentry gun under control of your Wrangler.

Ignite an enemy Spy while he's flicking a cigarette.

Have a sentry shielded by the Wrangler absorb 500 damage without being destroyed.

Cause a dominated player to leave the server.

Kill 3 enemies with revenge crits without dying.

Kill 3 enemies while they're taunting.

Kill a spy and two sappers within 10 seconds.

Kill a disguised spy with your Wrench.

Provide enemies with freezecam shots of each of your taunts.

Upgrade 50 buildings built by other team members.

Destroy 25 sappers on buildings built by other team members.

Kill 50 enemies with your flamethrower, from behind.

Repair a sentry gun under fire while being healed by a Medic.

Rack up 5000 kills with your sentry guns.

Kill a Soldier with a reflected critical rocket.

Kill 1000 enemies.

Provide an enemy player with a freezecam of your guitar playing skills.

Ignite 100 enemies with the flare gun.

Reflect 100 projectiles with your compressed air blast.

Use your shotgun to finish off an enemy recently damaged by your sentry gun.

Achieve 10 of the achievements in the Pyro pack.

Use a sentry gun to kill 25 enemy players that are capturing a point.

Achieve 16 of the achievements in the Pyro pack.

Kill 20 players carrying the intelligence.

Achieve 22 of the achievements in the Pyro pack.

Pick up 10,000 waste metal from pieces of destroyed buildings.

Achieve 10 of the achievements in the Heavy pack.

Help a teammate construct a building.

Achieve 16 of the achievements in the Heavy pack.

Manage to get to and then remove a sapper placed on your building while you were several meters away.

Achieve 22 of the achievements in the Heavy pack.

Destroy 50 enemy stickybombs lying in range of friendly buildings.

Smash an enemy player's head in with your guitar.

Kill 50 enemies within 3 seconds of them attacking your Medic.

Kill 10 Snipers with a sentry gun under control of your Wrangler.

Kill 10 enemies with a Medic assisting you, where neither of you die.

Perform 50 repairs and/or reloads on a Sentry gun being Wrangled by another Engineer.

Earn a domination for a Medic who's healing you.

Destroy an enemy Engineer's sentry gun with a sentry under control of your Wrangler.

Kill an enemy with a taunt.

Haul a level 3 sentry gun into a position where it achieves a kill shortly after being redeployed.

Kill 10 enemies carrying your intelligence.

Haul buildings 1 km over your career.

Work with a friendly Medic to kill an enemy Heavy & Medic pair.

Get 10 assists with another Engineer where a sentry gun was involved in the kill.

While invulnerable and on defense, block an invulnerable enemy Heavy's movement.

Have dispensers you created dispense a combined amount of 100,000 health over your career.

Block the enemy from moving the payload cart 25 times.

Repair 50,000 damage to friendly buildings constructed by other players.

Get ÜberCharged 50 times.

Help a single building tank over 2000 damage without being destroyed.

Kill 20 enemies while being recharged by a dispenser.

Keep a Heavy healed with your dispenser while he gains 5 kills.

Get 25 enemy kills where you either assist or are assisted by another Heavy.

Kill the Horseless Headless Horsemann.

Remove 20 stickybombs by killing the Demomen who produced them.

Collect a Soul Gargoyle in Mann Manor.

Kill 50 enemies while both you and your victim are underwater.

Craft the Saxton Hale Mask.

Collect the Horseless Headless Horsemann's Haunted Metal.

Get 20 kills on players that you're dominating.

Save your very first replay.

Survive a direct hit from a critical rocket.

While watching a replay, press space bar to enter the editor.

Get 1000 assists.

Render a replay into a movie.

Kill or assist in killing 10 cloaked Spies.

Complete each class to unlock the next.

Kill 5 enemies without spinning down your gun.

Kill an enemy within 5 seconds of you traveling through an Engineer's teleporter.

Fire $200,000 worth of minigun rounds in a single life.

Achieve 100 YouTube™ views for your movie.

Kill an enemy with a critical punch.

Achieve 1000 YouTube™ views for your movie.

Heal 1000 damage with med-kits in a single life.

Achieve 10,000 YouTube™ views for your movie.

Kill an enemy with your shotgun while you're out of minigun ammo.

Achieve 100,000 YouTube™ views for your movie.

Spend some time editing a replay.

Get 50 caps on payload maps.

Kill MONOCULUS!

Kill 25 enemies while you're standing on a control point you own.

Get to Loot Island and claim your reward!

Kill 15 enemies capturing a control point you own.

Collect three gifts dropped by opponents.

Help 5 teammates get revenge on their nemeses.

Kill an enemy who is capturing a control point with a critical hit.

Kill an enemy in the first 5 seconds after you exit a teleporter.

Play in a game with five or more players from your Friends list.

Provide an enemy with a freezecam shot of you taunting while invulnerable.

Be part of a team that wins within two minutes.

Eat 100 sandviches.

Win 137 Rounds.

Kill 50 Scouts using Natascha.

Capture the final control point within five seconds of your team capturing the previous control point.

Kill 10 Heavies with The K.G.B.

Capture a control point within 12 seconds after exiting a teleporter.

Get the first kill in an Arena or Competitive match.

Kill a player by pushing them into the cauldron fire.

Kill 5 enemies with the First Blood crit buff in an Arena match.

Win a round in which the enemy team has attempted to capture your final control point.

Kill a player in Well before the round starts.

Get one or more kills as all nine classes in one round.

Get 2004 lifetime kills.

Kill two people on the roof of the center control point in a single life.

In a single life, kill an enemy while you are on the ground, in the air, and in the water.

Play through a back-and-forth battle for 15 control point captures.

Destroy 3 teleporter entrances.

Achieve 7 of the achievements in the Foundry pack.

Destroy 3 enemy buildings while they are still under construction.

Complete all waves successfully in a mission.

Destroy an active sentry gun using your pistol.

Pick up the Australium from its home position and capture it without dropping it.

Achieve 10 of the achievements in the Scout pack.

Play in a game with five or more players from your Friends list.

Achieve 16 of the achievements in the Scout pack.

Win 138 Rounds.

Achieve 22 of the achievements in the Scout pack.

Launch the rocket as all 9 classes.

Perform 1000 double jumps.

Kill 3 players riding the elevator within 10 seconds.

Kill 3 enemies while under the effects of a Medic's ÜberCharge.

Win a round after the enemy team has opened the rocket lid.

Kill an enemy Heavy and take his Sandvich.

Kill 6 enemies carrying the Australium during the same round.

Kill a Medic that is ready to deploy an ÜberCharge.

Win a round with at least 5 teammates on the elevator.

Kill an enemy within the broken crate area while they attempt to pick up the neutral Australium.

Kill 20 players while double-jumping.

Push a player into the rocket's exhaust path at the end of the round.

Capture the enemy intelligence 25 times.

Kill an enemy who has damaged the Australium carrier in the last 3 seconds.

Capture the enemy intelligence 3 times in a single CTF round.

Achieve 7 of the achievements in the Doomsday pack.

Dodge 1000 damage in a single life using your Bonk! Atomic Punch.

Kill 79 enemies who have Balloonicorn pets.

Cause an environmental death or suicide using the Force-A-Nature's knockback.

Kill or assist kill 50 enemies while they are stunned or slowed.

Cause an environmental death by stunning or slowing an enemy.

Stun 2 Medics that are ready to deploy an ÜberCharge.

Ignite 3 enemy players using your Rainblower taunt.

Stun 50 enemies while they are capturing a point or pushing the cart.

Earn a credit bonus at the end of a wave.

Stun an enemy for the maximum possible duration by hitting them with a long-range ball.

Earn all credit bonuses in an advanced difficulty mission.

Stun a Scout with their own ball.

Pick up a credit pile that is about to expire.

Kill a Scout while they are under the effect of Crit-a-Cola.

Collect 1,000,000 credits in your career.

Kill 50 enemies from behind with the Force-A-Nature.

Complete a mission with 5 people on your Friends List.

Capture the last point in a CP map.

Play an entire mission as a single class, and do this for every class.

Capture three capture points in a row in one life.

Destroy two tanks within 5 seconds of each other.

Start capping a capture point within a second of it becoming available.

Destroy the tank during the final seconds of the bomb being deployed.

Initiate 10 point captures that ultimately succeed.

Destroy a tank within 20 seconds of its arrival.

Block 50 point captures.

During a wave, defend the hatch 10 times from robots about to deliver a bomb.

Kill an opposing player that has your intelligence while holding theirs.

In a single wave, kill 15 bomb-carrying robots in a row before they level up.

Defeat a wave in an advanced difficulty mission without dying once.

Complete the Crash Course, Doe's Drill, and Mann-euvers missions.

Bat an enemy 25 meters.

Use a canteen charged with 'Teleport to Spawn' and then kill the bomb carrier within 5 seconds.

Jarate an enemy that you're dominating.

Use a canteen charged with 'Crit Boost' to destroy a giant robot.

Provide an enemy with a freezecam shot of you doffing your hat.

Use a canteen charged with 'ÜberCharge' to destroy 15 robots.

During a wave, use a canteen charged with 'Instant Building Upgrade' to build a new sentry gun within 3 seconds of your previous sentry gun's destruction.

Capture the flag in CTF.

During a wave, use a canteen charged with 'Ammo Reload' to refill an empty weapon slot.

Kill 1000 enemies.

Max out all primary weapon upgrades.

Max out all resistances on a single class.

Headshot 10 enemy Snipers.

Prevent the bomb from ever reaching an alarm zone during the final wave of an advanced difficulty mission.

Kill 5 Medics that are ready to deploy an ÜberCharge in a wave.

Destroy 100,000 robots.

Destroy 1,000,000 robots.

Provide an enemy with a freezecam shot of you waving to them.

Destroy a sentry buster before it reaches its target.

As a Spy, sap 10 robots at once.

Kill 10 Spies with your Kukri.

Buff 4 or more teammates as a Soldier at the same time in a single wave.

During a wave, use rage as a Heavy to push a robot about to deliver the bomb.

As a Medic, share your canteen 5 times in a single wave.

In a single life, kill 3 enemies while they are achieving an objective.

As a Demoman, kill 10 robots in a single detonation.

Get 5 kills with the Sniper Rifle without your scope.

As a Scout, use the Sandman to mark 15 robots for death in a single wave.

Kill a Medic that is ready to deploy an ÜberCharge.

As a Sniper, kill 4 robots simultaneously.

Get backstabbed 50 times.

As a Pyro, reset the bomb 3 times in a single wave.

Kill an opponent within the first second of a round.

As an Engineer, escape with your sentry as a sentry buster is about to detonate.

Headshot an enemy player the moment his invulnerability wears off.

Get to Skull Island and claim your reward!

Top the scoreboard 10 times on teams of 6 or more players.

Kill MERASMUS!

Kill a spy whose backstab attempt was blocked by your Razorback.

Get and use a rare spell

Jarate 4 enemy players with a single throw.

Win 142 rounds

Jarate an enemy and the Medic healing him.

Perform 17 environmental kills in Hell

Use Jarate to reveal a cloaked Spy.

Kill 99 skeletons

Extinguish a burning teammate with your Jarate.

Use spells to kill 25 players

Pin an enemy Heavy to the wall via his head.

Earn 4 of the Helltower achievements

Kill a Heavy & Medic pair with the bow.

Get the loot from Skull Island in Hell

Take down an intelligence carrier with a single arrow.

Send Redmond/Blutarch to Hell 10 times

Hit an enemy with 3 arrows, without killing them.

Win 139 Rounds.

Score 5 assists with the Jarate in a single round.

Win 140 Rounds.

Jarate and then kill 3 enemies with your Kukri.

Win 141 Rounds.

Stab an enemy with an arrow.

Win a round in which the enemy team has attempted to capture your final control point.

Kill an enemy with an arrow while you're dead.

Wipe the other team with 12 or more players on the server.

Backstab 3 Snipers in a single life.

While rocket jumping, use a rocket to kill a rocket jumping enemy who also kills you with a rocket.

Provide an enemy with a freezecam shot of you flicking a cigarette onto their corpse.

Kill 15 enemies in the rafters above the central capture point.

Backstab a disguised Spy.

Kill a tank before it crashes through the barrier in Rottenburg.

Backstab the enemy that you're currently disguised as.

Play an advanced wave in Rottenburg without the bomb entering the town.

Stab an enemy while fencing.

As a team, pit 10 robots in a single wave in Mannhattan.

Ooohh Ooh Ahh Ahhhh! ...in Mannhattan

Backstab an Engineer, then sap 3 of his buildings within 10 seconds.

Play an advanced mission without losing a single gate in Mannhattan.

Sap an enemy building, then backstab the Engineer who built it within 5 seconds.

As a team, kill 50 stunned radiowave robots in an advanced mission in Mannhattan.

Backstab an enemy and the Medic healing him within 10 seconds of each other.

Kill 500 gate crashing robots in Mannhattan.

Backstab your Steam Community friends 10 times.

Kill 5 robots in a single explosion from detonating a sentry buster.

Dominate a Sniper.

Pit 100 robots in Rottenburg.

While cloaked, bump into an enemy cloaked Spy.

As a Sniper collect $500 in a mission without running over the currency packs.

Block 5,000 damage with the shield as a Medic in a single life.

Use one ÜberCharge to quickly revive 2 teammates within 5 seconds.

Kill a Sniper after your backstab breaks his Razorback.

Kill 5 robots with a single rocket while upgraded with rocket specialist.

Kill an Engineer who is working on a sentry gun.

Stun 50 robots while upgraded with rocket specialist.

Start capping a capture point within a second of it becoming available.

Kill 10 parachuting players.

Kill an enemy while you're being healed by an enemy Medic.

Melee kill 10 Snipers using The Classic.

Kill 15 enemies who are standing on a control point they own.

Kill a charging Demoman.

Backstab an enemy who is dominating 3 or more of your teammates.

While using the Back Scatter, kill 20 spies from behind.

Get a Revenge kill with a backstab.

While using the Back Scatter, kill a Heavy/Medic pair within 20 seconds of each other.