| Achievement | How to unlock
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| Hat Out of Hell | Get the loot from Skull Island in Hell.
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| Helltower: Competitive Spirit | Win 142 rounds.
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| Helltower: Hell on Wheels | Send Redmond/Blutarch to Hell 10 times.
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| Helltower: Hell's Spells | Get and use a rare spell.
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| Helltower: Mine Games | Score 17 environmental kills in Hell.
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| Helltower: Skeleton Coup | Kill 99 skeletons.
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| Helltower: Spelling Spree | Kill 25 players with spells.
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| The Mann-tastic Four | Earn 4 Helltower achievements.
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| Achievement | How to unlock
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|---|
| Air Raid | As a demo, kill 3 enemies in a single parachute deploy.
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| Back 2 Back | Using the Back Scatter, kill a heavy/medic pair within 20 seconds of each other.
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| Back in Business | Using the Back Scatter, kill 20 spies from behind.
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| Bombs Away! | Kill 3 enemies with the Air Strike in a single rocket jump.
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| Chain Reaction | Get 3 kills within 6 seconds using the demoman's charge.
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| Conga Line | Do the conga (taunt) with 10 or more players at once.
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| Dogfight | As a parachuting soldier, kill another parachuter.
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| Eagle Eye | Using "The Classic," kill a rocket/grenade jumper with a full-charge, no-scope headshot.
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| Emergency Brake | Kill a charging demoman.
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| Fast Fingers | Backstab a scout using the Back Scatter.
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| Flight Cancelled | Using "The Classic," kill 25 parachuting players with a critical headshot.
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| Flight Control | As a parachuting demo, kill another parachuter.
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| Flip-Kabob | Ignite a player who is being flipped by the Flippin' Awesome taunt.
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| Head-On Collision | Kill a charging demo while charging yourself.
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| Hipshot | Using "The Classic," kill 10 enemies with a full-charge, no-scope headshot.
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| Maximum Potential | Reach the Air Strike's maximum clip size.
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| May I Cut In, Too? | Kill 10 players doing the Square Dance taunt.
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| Nose Dive | Kill 10 players parachuting with the B.A.S.E. Jumper.
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| On the Rocks | With the rock-paper-scissors taunt, lose 3 times in a row while picking rock.
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| Operation High Dive | Parachute 19.47 miles as a demoman.
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| Party Crasher | Kill 3 players doing the conga within 5 seconds.
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| Prime Cuts | Using "The Classic," gib all 9 classes during a single round.
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| Project Excelsior | Parachute 19.47 miles as a soldier.
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| Punching Bag | Kill 10 snipers using The Classic.
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| Running With Scissors | With the rock-paper-scissors taunt, win 3 times in a row with scissors.
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| Severed Ties | Using the Back Scatter, kill 20 friends from behind.
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| Showboat | Do 10 partner taunts with a teammate while capturing a control point.
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| U-Turn | As a demo, kill a foe you couldn't see at the beginning of your charge.
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| Upper Hand | Kill 3 enemies during a single parachute deploy.
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| Achievement | How to unlock
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|---|
| Dynasty | Win 20 games.
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| Flamethrower | Set five enemies on fire in 30 seconds.
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| Grey Matter | Get 25 headshots as a Sniper.
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| Hard to Kill | Get five kills in a row without dying.
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| Hardcore | Accumulate 1000 total kills.
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| Head of the Class | Play a complete round with every class.
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| Impenetrable Defense | Successfully defend Dustbowl without giving up a capture.
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| Impossible Defense | Successfully defend Gravel Pit without giving up a capture.
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| Lightning Offense | Win Well in 5 minutes or less.
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| Master of Disguise | Trick an opposing medic into healing you.
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| Nemesis | Get five revenge kills.
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| Powerhouse Offense | Win 2Fort with a shutout.
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| Relentless Offense | Win Hydro without giving up a capture.
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| Sentry Gunner | Accumulate 10 sentry gun kills with a single turret.
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| Team Doctor | Accumulate 25000 heal points as a Medic.
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| With Friends Like these... | Play in a game with 7 or more players from your friends list.
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| World Traveler | Play a complete game on 2Fort, Dustbowl, Granary, Gravel Pit, Hydro, and Well (CP).
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