| Achievement | How to unlock
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| - Set up 15 simultaneously active claymore mines.
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| - Survive for 30 waves in Tactical Mode on the Prison map.
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| - In one game kill 12 bosses with inventory landmines.
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| - In one game survive 25 missile hits from a Rotor Boss.
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| - In a game kill 3 Mortar Bosses with Grenade Sentry guns.
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| - In one game pick up 25000 coins from dead enemies.
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| - During Bullet Time, kill 5 Suiciders with the Steam Hammer.
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| - In Tactical Mode, in a single wave kill 3 melee bosses in a row.
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| - Reach the Commander Player Rank.
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| - In a game get damaged by 20 Demolition or Chainsaw Boss melee hits.
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| - Survive 20 minutes on Shipwreck without building anything.
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| - Explode 500 suicide bombers.
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| - In a game kill 2 bosses during a single Ghost powerup.
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| - In a game blow up 10 gas cannisters dropped by dead suiciders.
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| - In a game use Cluster Bombs to kill 150 enemies.
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| - Pick up an AK47, get Rage Trigger + Frenzy and kill 123 enemies during Rage.
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| - In a game kill 100 suiciders using grenade sentries.
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| - In a game survive for 10 minutes without using any ranged weapon.
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| - Kill 2 Demolition Bosses within 60 seconds of each other.
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| - In one game get hit by every boss type.
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| - In a game pick up and detonate 10 ieds.
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| - On Campsite map survive 10 minutes without a regular enemy reaching the tent.
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| - In a game explode 21 flares using Payload.
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| - Kill 100 enemies without taking any damage.
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| - Kill 1000 enemies without taking any damage.
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| - Kill 250 enemies without taking any damage.
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| - Kill 500 enemies without taking any damage.
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| - Use the M1919 Machine Gun to kill 5 bosses during Rage powerups in one game.
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| - In a single wave, kill 250 enemies using explosions.
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| - Reach the Master Player Rank.
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| - In a game kill 5 Rotor Bosses while they are flying.
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| - In a public on-line game reach wave 20.
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| - In a game kill 3 Flamer Bosses with a M2 Weapon Station.
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| - In a game get damaged by 5 Flamer Boss death explosions.
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| - Reach the Veteran Player Rank.
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| - In a game deploy one sentry gun and let it kill 666 enemies.
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| - Without taking damage, kill 1000 enemies within the first 6 minutes of a game.
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| - In a game kill 1000 enemies using shotgun sentries.
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| - In a game get damaged by 10 suiciders.
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| - In one game kill 500 enemies using the M1919 Machine Gun during Bullet Time.
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| - In a game kill 3 Tank Bosses.
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| - In a friends on-line game reach wave 30.
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| - In a game stock handgrenades, pick only Anarchist then kill 1500 inside 10 minutes.
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| - Kill 300 enemies in the first 3 minutes of a game.
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| - Reach the Captain player rank.
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| - Survive 5 minutes without killing any boss.
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| - During the building phase, destroy 5 items created by another player.
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| - Reach the Warlord Player Rank.
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| - In a Coop game kill 2500 + 25 bosses. Kills count with your health 75%+.
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| - In a SP game kill 2000 + 20 bosses. Kills count with your health 75%+.
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