CWCheat Ben 10 Ultimate Alien Cosmic Destruction (USA):

 In Game Cheats

At the main menu select "Cheats" to input the following codes
Effect                                                                                                 Code
Acquire 1 million DNA cash                                                                cash
AI does 2x damage and player does 1/2 damage                                 hard
Energy meter regenerates                                                                    energy
Life meter regenerates                                                                         health
Unlocks all levels                                                                                 levels
Upgrade every alien form to max                                                         upgrade

CW Cheats (USA):

_S ULUS-10542
_G Ben 10 Ultimate Alien Cosmic Destruction
_C0 Skywalker
_L 0×20005308 0x0A200400
_L 0×20001000 0x3c080909
_L 0×20001004 0x3c093f80
_L 0×20001008 0×25290000
_L 0x2000100c 0xad09f174
_L 0×20001010 0x03e00008
_C0 Speed Hack
_L 0×20005308 0x0A200400
_L 0×20001000 0x3C08098F
_L 0×20001004 0x8D08B5AC
_L 0×20001008 0x3C092B66
_L 0x2000100C 0x35295F88
_L 0×20001010 0xAD094EE6
_L 0×20001014 0x03E00008
_C0 Prevented to walk
_L 0×20005308 0x0A200400
_L 0×20001000 0x3C0809F3
_L 0×20001004 0x8D08CB10
_L 0×20001008 0x3C090000
_L 0x2000100C 0×35290000
_L 0×20001010 0xAD095E3F
_L 0×20001014 0x03E00008
_C0 Inf Score Upgrade Forms
_L 0×20005308 0x0A200400
_L 0×20001000 0x3C0809CA
_L 0×20001004 0x8D08F14C
_L 0×20001008 0x3C0944EB
_L 0x2000100C 0×35297000
_L 0×20001010 0xAD096094
_L 0×20001014 0x03E00008