| Achievement | How to unlock
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| - Kill 30 enemies in a row without dying or being incapacitated.
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| - Get the killing blow on the Banshee.
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| - Kill 15 enemies in a row without dying or being incapacitated.
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| - Kill 10 enemies in a row with the Melee Attack without dying.
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| - Kill 10 enemies in a row with Grenades without dying.
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| - Complete any Level, in any difficulty, in a 4-player co-op game.
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| - Kill 4 enemies simultaneously with a Grenade.
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- Complete Level 2 in any difficulty mode
| - Complete Level 2 in any difficulty mode.
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| - Kill an enemy Player after you die.
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| - End an enemy Player's killing spree.
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| - Win a Capture The Flag round with 10 kills and zero deaths.
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| - Kill 10 enemies in a row with the Chimera without dying.
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| - Revive an incapacitated Player 10 times in Campaign Mode.
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| - Win a Team Deathmatch round with 10 kills and zero deaths.
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| - Complete all 4 Levels in 'Nightmare' difficulty mode.
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| - Kill 10 enemies in a row with the Piranha without dying.
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| - Obtain Rank 5 in all 4 XP categories.
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| - Capture the Flag 3 times during a Capture-The-Flag round.
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| - Complete Level 1 in any difficulty mode.
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| - Complete Level 3 in any difficulty mode.
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| - Complete Level 4 in any difficulty mode.
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| - Obtain Rank 10 in all 4 XP categories.
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| - Get the killing blow on the Digger.
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| - Kill 10 enemies in a row with Adhesive Grenades without dying.
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| - Win a Deathmatch round with at least 50 kills.
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| - Kill 20 enemies in a row without dying or being incapacitated.
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| - Get the killing blow on Lilith.
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| - Kill 10 enemies in a row with the Reaper without dying.
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| - Kill 10 enemies in a row with the Manticore without dying.
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| - Complete all 4 Levels in 'Normal' difficulty mode.
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| - Kill 10 enemies in a row with the Guardian without dying.
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| - Kill 25 enemies in a row without dying or being incapacitated.
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| - Complete any Level, in any difficulty, using only the Piranha.
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| - Kill 4 enemies simultaneously with the Shockwave Ability.
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| - Kill 10 enemies in a row with the Firefly without dying.
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| - Kill 4 enemies simultaneously with an Adhesive Grenade.
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| - Complete Level 3 in any difficulty mode without being incapacitated.
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| - Complete Level 4 in any difficulty mode without being incapacitated.
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| - Complete Level 2 in any difficulty mode without being incapacitated.
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| - Complete Level 1 in any difficulty mode without being incapacitated.
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| - Restart the game after disabling VAC without having a VAC banned account. Why would you want to disable VAC? Hmmm...
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| - Kill 10 enemies in a row with the Shockwave without dying.
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| - Kill 10 enemies in a row with the Barracuda without dying.
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| - Obtain all Weapons Awards.
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