Unlockables:
Unlock the following bonuses by performing the corresponding tasks:
BONUS – HOW TO UNLOCK
.50 caliber machine gun – Beat “The Woman Left Behind” mission with an “S” rank.
2nd Amendment mode – Beat the first four missions in Quest mode.
Ammo Belt – Beat the “Gun Shop Standoff” mission with an “S” rank.
Apocalypse Frank costume – Defeat 53,594 zombies.
Arthur’s Boxers – Beat the game without dying.
Bikini costume – Beat the game with an “A” rank or better on the Normal difficulty.
Bionic Commando costume – Beat the game twice.
Chicago Typewriter – Beat the game with an “A” rank or better with a time under ten hours.
Cultist Leader’s Sword – Beat the “A Strange Group” mission with an “S” rank.
Hockey Mask – Beat “The Cult” mission with an “S” rank.
Killer 7 – Beat the game to get the Killer 7 instead of the repaired Blacktail from Cletus.
Kung Fu costume – Beat the game twice on the Hard difficulty.
Laser Sword – Beat all missions in Odd Jobs mode with an “S” rank.
Mall employee uniform – Beat the “Out Of Control” mission with an “S” rank.
Megaman Boots – Beat all missions in 2nd Amendment mode.
Megaman Helmet – Collect it from the movie theater toy store.
Megaman Tights – Beat all missions in 2nd Amendment mode with an “A” rank or better.
Mini-chainsaw – Beat the “Out Of Control” mission with an “S” rank to make Adam’s mini-chainsaw respawn in the security room. Alternately, Beat “The Shadow Of North Plaza” mission with an “S” rank.
New Game mode – Beat the game.
Odd Jobs mode – Beat the game.
Police Cap – Beat the game with an “A” rank or better, save all survivors, and do not allow any to escape.
Prisoner Garb costume – Beat the “Prisoners” mission with an “S” rank.
Pro Wrestling Boots – Beat Odd Jobs mode.
Pro Wrestling Briefs – Beat all missions in Odd Jobs mode with an “A” rank or better.
Quest mode – Beat the game with an “A” rank or better on the Normal difficulty.
Real Mega Buster – Beat all missions in 2nd Amendment mode with an “S” rank.
Red 9 – Beat the “Lovers” mission with an “S” rank.
Riot Gun – Beat the “Dressed For Action” mission with an “S” rank.
Roll costume – Beat the game with an “S” rank on the Hard difficulty.
School Boy Clothes – Beat the game with an “A” rank or better.
Semi-Automatic Rifle – Beat the “Mark Of The Sniper” mission with an “S” rank.
Small Mixer – Beat the game to unlock it for purchase from Cletus.
Special Forces costume – Beat the game with an “A” rank or better on the Hard difficulty.
“The Drunkard” mission – Beat the “Out Of Control” mission with an “S” rank.
Turret Gun – Beat the “Prisoners” mission with an “S” rank.
White Hat – Beat the game with 100% item usage.
Yakuza costume – Beat the game with an “A” rank or better on the Normal.
Secret case file:
To unlock the secret case file that is used to take down the sniper family towards the end of Case 5, get an “S” rank on all files.
Get Killer 7 Free:
Don’t pick up the Killer 7 that Cletus has on the table. He’ll give it you at a later point in the game for free.
Quest mode:
To unlock Quest mode, successfully complete the game with an “A” rank under the Normal difficulty setting.
“2nd Amendment” mini-games:
To unlock the “2nd Amendment” mini-games, successfully complete the first four missions in Quest mode.
“Odd Jobs” mini-games:
To unlock the “Odd Jobs” mini-games, successfully complete the game.
New game mode:
Complete the game. You can start a new game session with your previously earned inventory items and level.
“The Drunkard” mission:
To unlock “The Drunkard” mission, earn an “S” rank on the “Out of Control” mission.
Extra kills:
You will need a sniper rifle for this trick. Go to the rooftop of the mall where the elevator is located. Take a look at the parking through the fence at the right of the elevator door. You can see many zombies walking by the parking that can be used to raise your killing score.
Easy kill count glitch:
This trick works in the final case, when the Special Forces arrives and kills all zombies in the mall. When you are inside the mall you will see a lot of zombie corpses on the ground, killed by the Special Forces. You can shoot them, and it counts as a kill even through they are already dead.