Activate the following cheats by entering the corresponding codes at the main title screen that displays "Press Start":
CHEAT FUNCTION - CHEAT CODE
Zombie mode - Press TRIANGLE, X(3), SQUARE, CIRCLE. In those mode. you can see all of the damage textures for each warrior. Warriors will continue to fight when their limbs are severed or they are decapitated. Players must win by cutting off both of their opponent's legs.
Slice mode - Press L2, SQUARE, X, SQUARE, X, R2. In this mode. every attack that lands on either warrior will sever a limb.
Sudden Death mode - Press SQUARE, R1, UP, DOWN, L1, X. In this mode, each warrior starts with no health. One hit finishes the match.
God mode (player one) - Press UP, X, SQUARE, CIRCLE, TRIANGLE, DOWN. In this mode, player one will not lose health and cannot die.
God mode (player two) - Press DOWN, CIRCLE, SQUARE, X, TRIANGLE, UP. In this mode, player two will not lose health and cannot die.
Unlock the following bonuses by performing the corresponding tasks:
BONUS - HOW TO UNLOCK
Alternate Outfit - Defeat your own warrior
Challenge Mode - Beat Arcade mode with all characters on any difficulty setting
Lab Stage - Beat Arcade mode with all characters on the Deadliest
difficulty. Alternately, defeat 10 opponents in Survival mode.
Long range weapon - Beat Arcade Mode
Mid Range Weapon - Complete Slice
Short Range Weapon - Complete Target
"A Head Of The Competition" trophy hint:
As a Samurai, istead of needing a lucky strike, your special move slices the enemy's head off. Do this against guerrilla units, such as the ninja or apache.
"The Black Knight" trophy hint:
Play as the Pirate and toos the bombs. There is a 50% chance that it will blow off all the limbs.
"Tournament To Kill" trophy hint:
To easily gain victories, play as either Apache or Ninja and choose the poison projectiles. Land at least one projectile on the enemy, then avoid the enemy until the time runs out.
"On Death's Door" trophy hint:
Have a friend use the Pirate class. When he tosses two bombs at you, both your arm and leg will be broken. Finish off your pirate friend to unlock the trophy.
A Head of the Competition - Decapitate 100 enemy warriors as the primary player.
Pin Cushion - Stick 4 projectiles in a single opponent as the primary player.
Against All Odds - Defeat 25 warriors in Survival Mode as the primary player.
Flesh Wound - Perform a final strike on an opponent after your arm has been sliced off as the primary player.
On Death's Door - As the primary player, kill and opponent while at critical health, with your leg and arm injured.
Right on Time - Perform only perfectly timed strikes to defeat an enemy as the primary player.
Shishkabob - Remove an enemy's head with a projectile and stick it into a wall as the primary player.
Who's Deadliest Now? - Defeat Arcade mode on the Deadliest difficulty as the Ninja, the Viking, and the Knight.
That Was Sparta! - Kill 300 Spartans as the primary player.
Tournament to Kill - Win 10 online tournaments as the primary player.
Black Knight - Remove all four limbs from the Knight during a single match as the primary player.
Deadliest Arsenal - Unlock every weapon and armor available for every warrior as the primary player.