Achievements:
My BOOMSTICK! - Kill any 100 enemy with the shotgun
Bottles of Blood - Find and shoot all the bottles of blood
Don't mention the Z word! - Successfully complete Chapter 1 with 4 players
Explosive Personality! - Kill a suicide grunt by hitting his grenade
Good, bad, I'm the guy with the gun. - Kill 20 Elites in co-op
Groovy! - Pick up a shotgun
I have given them the last Reichs. - Get at least 10 for 1 explosive kill in 4 player co-op
I ran it under a cold tap. - Get at least 20 for 1 explosive kill in 4 player co-op
I will not negotiate with the Undead - Kill 5000 enemies
I'm coming to get you Barbara! - Kill 1000 enemies
Like a drunk who's lost a bet. - Kill 20 enemies as they revive
Nazi Army Gold - Collect all Gold Bars
No more room in hell - Successfully complete Chapter 5 with 4 players
Play it Thule - Successfully complete Chapter 3 with 4 players
Resurrect this! - Kill the Occult General
Resurrection Day - Successfully complete Chapter 2 with 4 players
Send...more...Paramedics.. - Successfully complete All Chapters 4 players on Elite Difficulty
Soul survivor - Kick 50 enemies down in co-op
The pen is mightier than the sidearm - Successfully complete Chapter 4 with 4 players
The Preacher says BOOM! - Pick up the Preacher
They're all messed up - Get at least 15 for 1 explosive kill in 4 player co-op
We got this by the ass! - Kill 500 enemy grunts
You got rid of those stiffs yet? - Kill 100 skeletons with explosives
Your blood pressure is zero over zero. - Kill 20 Snipers in co-op
You've got red on you - Kill 2000 enemy grunts in co-op