After completing the game under the Normal difficulty setting, enter the following as a code: UP(2), DOWN(2), LEFT, RIGHT, LEFT, RIGHT.
Unlockable Characters:
Unlock the following characters by performing the corresponding tasks:
CHARACTER - HOW TO UNLOCK
Boogie - Buy everything in survival mode
Bubbles - Survive 15 consecutive waves
Cesar - Kill an enemy with a 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 on hard
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 on normal
Rin - Perform 20 bat counter kills
Sunshine - Purchase an item in survival
Achievements:
ACHIEVEMENT - HOW TO UNLOCK
And the Kitchen Sink (5) - Find the kitchen sink and kill someone with it
Batter Up (5) - Execute 150 kills with the baseball bat
Combo King (15) - Do 10 combos of 20 hits or more
Ditch Digger (5) - Kill 100 enemies using the shovel
Freedom Fighter (5) - Rescue 50 Civilians From The Militia
Gimmick Free (10) - Kill a Survival Boss with no traps or grenades
No Bargains (10) - Buy nothing for 10 straight waves of Survival
Not So Fast (5) - Do 30 counters in one Survival match
Pistol Heimlich (15) - Perform 60 Pistol Counter Kills
Shank SMASH (5) - Kill 50 enemies with the heavy object smash
Shopaholic (5) - Buy everything in Survival Mode
Surf's Up (10) - Stay alive for 15 consecutive Survival waves
That Is Gonna Leave A Mark (15) - Perform 100 Machete Counter Kills
The First Dozen (5) - Kill 12 enemies
The Story Ends (15) - Complete Campaign Mode on Normal difficulty
Too Easy (15) - Complete Campaign Mode on Hard difficulty
Trigger Happy (15) - Get 30 firetrap kills in one Survival match
Ultimate Survivalist (20) - Defeat all the waves in any Survival map
Up Close and Personal (10) - Beat a Campaign level with no ranged attacks
Zombie Killer (10) - Reach the zombie wave in each Survival map
