Challenge Bonuses

Glass Smash

Pane In The Neck: Rotating Heads (Gold) 
Bricking It: Brick Weapon (Gold) 
Stain Removal: Nothing (Gold) 
Behead The Undead

Fight Off The Living Dead: Sewer Zombie (Gold) 
Sergio's Last Stand: Unknown 
Day Of The Dammed: Feeder Zombie (Silver/Gold) 
Infiltration

Silent, But Deadly: Viking Hat (Gold) 
Trouble At The Docks: Pirate Hat (Gold) 
Escape From NeoTokyo: Big Ears hat (Gold) 
Banana Chomp

Gone Bananas: Private Coal (Gold) 
Monkey Business: Unknown 
Playing With Fire: Wood Golem (Silver) 
Cut-Out Shoot-Out

Take 'em Down: Ample Sally (Gold) 
Fall Out: Marco the Snitch (Gold) 
Pick Yer Piece: Sgt. Rock- Gold 
Timesplitters "Story" Classic

Badass Buspass Impasse: Badass Cyborg (Gold) 
But Where Did The Batteries Go?: R One-Oh-Seven (Platinum) 
Hit me Baby One Morgue Time: Cropolite (Gold) 
Monkeying Around

Simian Shooter: Insect Mutant (Silver) 
Monkey Mayhem: Lola Varuska, Mischief (Platinum) 
Dam Bursters: Robofish, Circus level (Gold) 

Arcade League (Elite) Bonuses

One Shot Thrills

Babes in the Woods: Jo-Beth Casey (Gold) 
Double Bill: Beetleman, The Impersonator (Gold) 
Nikki Jinki Bricky: Nikki, Jinki (Gold) 
Duel Meaning

If I'm Ugly-You Smell!: Mikey Twoguns, Jared Slim (Platinum) 
Golem Guru: Kypriss, Fat Characters (Platinum) 
Golden Thighs: High Priest, Aztec Warrior (Platinum) 
Frantic Series

Hangar's Hat's Off!: Henchman, Dark Henchman (Gold) 
Can't Please Everyone...: Maiden, Changeling (Gold) 
Big Top Blowout: Mr. Giggles (Silver), Stumpy (Gold) 
Team Series C

Bags Of Fun: Ringmistress, Big Hands, Slow Motion Deaths (Gold) 
They're Not Pets!: Baby Drone, Bear (Gold) 
Nice Threads: Unknown 
Sincerest Form Of Flattery

Aztec The Dino Hunter: Dinosaur (Gold) 
Half Death: Drone Splitter (Gold) 
Dead Fraction: Jebediah Crump (Silver) 

Arcade League (Honorary) Bonuses

Maximus

Cold Corpse Caper: Cyber Fairy, Gargoyle (Gold) 
Killer Queen: Leo Krupps (Gold) 
R109 Beta: Ufopia, Gladiator mode-Bronze 
Elimination Series

Baking For The Taking: Chinese Chef, Gingerbread Man (Platinum) 
Brace Yourself: Braces, Trooper Brown (Gold) 
Starship Whoopers: Chinese, Monkey Assistant, Trooper Black (Gold) 
Burns 'n Bangs

Chinese Burns: Calamari, Chef Hat (Platinum) 
Snow Business: Snowman, Trooper Grey (Gold) 
Rocket Man: Venus Star, Capt. Sand, Duckman Drake (Gold) 
Outnumbered, But Never Outpunned!

Someone Has Got To Play...: Capt. Night (Gold) 
Time to Split: Barby Gimp, Scourge Splitter (Gold) 
Can't Handle This: Chasm, Hatchet Sal, Handyman (Gold) 
Team Series B

Hack A Hacker: Krayola, Milkbaby (Gold) 
Rice Cracker Rush: Riot Officer, The Master (Gold) 
Superfly Lady: Capt. Pain (Gold) 

Arcade League (Amateur) Bonuses

Beginners Series

Adios Amigos!: Hector Babosal, Lean Molly (Gold) 
Casualty: Dr. Peabody, Crypt Zombie (Gold) 
Top Shot: Hangar Level, Sgt. Shock, Elimination mode (Gold) 
Mode Madness

Chastity Chased: Regeneration mode (Gold) 
Shrinking from the Cold: Private Sand, Sgt. Slate, Shrink mode (Gold) 
Scrap Metal: Scrapyard, Chassisbot (Gold) 
It's A Blast

Night Shift: Sentry bot, Leech mode (Gold) 
Spoils of War: Meezor Mox, Thief mode (Gold) 
Demolition Derby: Male Trooper, Female Trooper, Robot Factory Level, Vampire Mode 
(Gold) 
Too Hot To Handle

Monkey Immolation: Crispin, Flame tag (Gold) 
Disco Inferno: Louie Big Nose, Lt. Wild (Gold) 
Burns Department: Undead Priest, Nightclub, Virus mode (Gold) 
Team Series A

Club Soda: Slick Tommy, Jimmy Needles (Gold) 
Station Stand: Lt. Shade, Zones mode (Gold) 
Men in Gray: Accountant, Kawer, Assault mode (Gold) 

Ending Bonuses

Successfully complete the game on the easy difficulty setting to unlock the Cardboard Characters cheat and Streets level in arcade mode.

Challenge Pane In The Neck Level Rewards

Successfully complete the Challenge Pane In The Neck level with a "Silver" rank to unlock the Rotating Heads cheat.

Arcade Adios Amigos Level Rewards

Successfully complete the Arcade Adios Amigos level with a "Gold" rank to unlock Hector Babasco and Lean Molly as playable characters in arcade mode.

2280 Return To Planet X Level Rewards

Successfully complete the 2280 Return to Planet X level in story mode on the medium difficulty setting to unlock Ozor Mox as a playable character in arcade mode.