| Achievement | How to unlock
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| - Kill any 100 enemy with the shotgun.
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| - Find and shoot all the bottles of blood.
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- Don't mention the Z word!
| - Successfully complete Chapter 1 with 4 players.
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| - Kill a suicide grunt by hitting his grenade.
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- Good, bad, I'm the guy with the gun.
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- I have given them the last Reichs.
| - Get at least 10 for 1 explosive kill in 4 player co-op.
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- I ran it under a cold tap.
| - Get at least 20 for 1 explosive kill in 4 player co-op.
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- I will not negotiate with the Undead
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- I'm coming to get you Barbara!
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- Like a drunk who's lost a bet.
| - Kill 20 enemies as they revive.
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| - Successfully complete Chapter 5 with 4 players.
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| - Successfully complete Chapter 3 with 4 players.
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| - Successfully complete Chapter 2 with 4 players.
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- Send...more...Paramedics..
| - Successfully complete All Chapters 4 players on Elite Difficulty.
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| - Kick 50 enemies down in co-op.
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- The pen is mightier than the sidearm
| - Successfully complete Chapter 4 with 4 players.
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| - Get at least 15 for 1 explosive kill in 4 player co-op.
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- You got rid of those stiffs yet?
| - Kill 100 skeletons with explosives.
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- Your blood pressure is zero over zero.
| - Kill 20 Snipers in co-op.
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| - Kill 2000 enemy grunts in co-op.
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