BoomBots Codes -

Unlock characters and levels:
Press Square(4), Circle(4), Square(4), Select(3) at the BoomBot selection screen.

Cheat mode:
Press Square, Circle(2), Square, Circle(2), Square, Circle(2), Square, Circle(2), Select(3) at the BoomBot selection screen to enable cheat mode. Then, enter one of the following codes to activate the corresponding cheat function.

One hit kills CPU opponent:
Pause game play and press Circle + Square +Triangle.

CPU opponent has 100 less health:
Pause game play and press Circle + Square.