Biological Warfare
Kill 20 enemies with the Acid Spray (attached to the Bazooka).
Chainsaw Massacre
Kill 20 enemies with the Chainsaw Bayonet (attached to the Assault Rifle).
Electric Chair Executioner
Kill 20 enemies with the Electric Shock (attached to the Submachine Gun).
Firestarter
Kill 20 enemies with the Flame Thrower (attached to the Grenade Launcher).
Stabber
Kill 20 enemies with the Knife Bayonet (attached to the Shotgun).
Black Knight
Kill 20 enemies with the Mace Club (attached to the Sniper Rifle).
Anthrax Killer
Kill 20 enemies with the Toxin Spray (attached to the Gatling Gun).
Rifleman
Kill 50 enemies with the Assault Rifle.
Cannoneer
Kill 50 enemies with the Bazooka.
Heavy Machine Gunner
Kill 50 enemies with the Gatling Gun.
Grenadier
Kill 50 enemies with the Grenade Launcher.
Pump Gun Killer
Kill 50 enemies with the Shotgun.
Drive-by Killer
Kill 50 enemies with the Submachine Gun.
Marksman
Kill 50 enemies with the Sniper Rifle.
Mass Shooter
Kill 1000 enemies.
Medieval Warfare
Kill 250 enemies with Melee weapons.
Modern Warfare
Kill 750 enemies with Range Attack weapons.
Five-Star General
Receive 200 Stars while playing in the competitive Multiplayer mode (Player vs. Player).
Trophy Hunter
Finish 50 rounds (not whole matches) on the pole position (1st rank in the scoreboard) while playing in the competitive Multiplayer mode (Player vs. Player).
Co-Op Gold Medal
Join or Host 50 Co-Op missions and complete them.
Co-Op Silver Medal
Join or Host 25 Co-Op missions and complete them.
Co-Op Bronze Medal
Join or Host 10 Co-Op missions and complete them.
Multiplayer Gold Medal
Join or Host 50 Multiplayer matches and complete all rounds until the next match starts.
Multiplayer Silver Medal
Join or Host 25 Multiplayer matches and complete all rounds until the next match starts.
Multiplayer Bronze Medal
Join or Host 10 Multiplayer matches and complete all rounds until the next match starts.
Elite Singleplayer Gold Medal
Complete the Elite campaign on difficulty level “Hardcore”.
Elite Singleplayer Silver Medal
Complete the Elite campaign on difficulty level “Challenging”.
Elite Singleplayer Bronze Medal
Complete the Elite campaign on difficulty level “Casual”.
Freedom Singleplayer Gold Medal
Complete the Freedom campaign on difficulty level “Hardcore”.
Freedom Singleplayer Silver Medal
Complete the Freedom campaign on difficulty level “Challenging”.
Freedom Singleplayer Bronze Medal
Complete the Freedom campaign on difficulty level “Casual”.
Sci-Fi Killer
Kill 20 enemies with the Plasma Shock (attached to the Autocannon).
Artilleryman
Kill 50 enemies with the Autocannon.