Bonuses
Complete the indicated task to unlock the corresponding item or weapon.
.50 caliber machine gun: Complete "The Woman Left Behind" mission with an "S" rank.
Ammo Belt: Complete the "Gun Shop Standoff" mission with an "S" rank.
Apocalypse Frank costume: Defeat at least 53,594 zombies.
Arthur's Boxers: Compete the game without dying.
Bikini costume: Complete the game with an "A" rank under the Normal difficulty.
Bionic Commando costume: Complete the game twice.
Chicago Typewriter: Complete the game with an "A" rank under the Normal difficulty.
Cultist Leader's Sword: Complete the "A Strange Group" mission with an "S" rank.
Hockey Mask: Complete the "The Cult" mission with an "S" rank.
Killer 7: Complete the game to get the Killer 7 instead of the repaired Blacktail from Cletus.
Laser Sword: Complete Odd Jobs mode with an "S" or better rank in all missions.
Mall employee uniform: Complete the "Out Of Control" mission with an "S" rank.
Mega Man boots: Complete all "2nd Amendment" mini-games.
Mega Man helmet: Collect from the movie theater toy store.
Mega Man tights: Complete all "2nd Amendment" mini-games with an "A" rank.
Police cap: Complete the game with an "A" rank under the Normal difficulty.
Prisoner Garb costume: Complete the "Prisoners" mission with an "S" rank.
Pro wrestling boots: Complete Odd Jobs mode.
Pro wrestling briefs.: Complete Odd Jobs mode with an "A" or better rank in all missions.
Real Mega Buster: Complete all "2nd Amendment" mini-games with an "S" rank.
Red 9: Complete the "Lovers" mission with an "S" rank.
Riot Gun: Complete the "Dressed For Action" mission with an "S" rank.
Roll costume: Successfully complete the game with an "S" rank under the Hard difficulty setting.
School Boy Clothes: Complete the game with an "A" rank.
Semi-automatic rifle: Complete the "Mark Of The Sniper" mission with an "S" rank.
Special Forces costume and boots: Complete the game with an "A" rank under the Hard difficulty.
Turret gun: Complete the "Prisoners" mission with an "S" rank.
White hat: Complete the game with 100% item usage.
Yakuza costume: Complete the game with an "A" rank under the Normal difficulty.
Obtain Killer 7 for free on first play through
When playing through the game, you eventually get the ability to take the shortcut to Cletus' gun shop. After every few missions [Say after maybe two or three], go to his store, and purchase something. On one occasion, beside Cletus there will be a gun on the table to the left of him. (Your left) Examine it, and when the game prompts you on whether to pick it up or not, say no. Cletus will then tell you he's been working on it for you, since you are a good customer. Around the time you recieve the repaired Blacktail, you will recieve the Killer 7 as a gift from Cletus.