Complete the indicated task to unlock the corresponding character.
Character
How to unlock
Boogie
Purchase everything in Survival mode.
Bubbles
Survive 15 consecutive waves.
Cesar
Kill someone with a kitchen sink.
Chop Chop
Perform 60 pistol counter kills.
Classic Shank
Kill a goon by throwing a bomber.
Defender
Perform 100 turret kills.
Falcone
Complete Campaign mode under the Hard difficulty.
Hobo
Defeat all waves of a Survival map.
Horror
Reach the zombie wave in each Survival map.
Junior
Perform 50 fire trap kills.
Kat
Perform 100 grenade kills.
Rex
Complete Campaign mode under the Normal difficulty.
Rin
Perform 20 bat counter kills.
Sunshine
Purchase any item in Survival mode.
Easy "And the Kitchen Sink" Trophy
Play level 7 in Campaign mode and enter a small house. Collect the sink found inside, then kill the nearby enemies outside the house.
Easy "Shank, SMASH!" Trophy
Play level 2 in Campaign mode. Do not bother with the first enemy. After the short intermission sequence, throw the forklift into the next room to get two heavy kills. Restart the level and repeat the process.
Easy "Shopaholic" Trophy
The items do not have to be purchased during the same game. Reach Wave 20 on any map in Survival mode to unlock the final item in the shop.
Easy "Zombie Killer" Trophy
Reach to Wave 14 on all three Survival mode maps.
Play as Evil in Survival mode
Successfully complete the game under the Normal difficulty setting. Then, press Up(2), Down(2), Left, Right, Left, Right at the character selection screen.