Rogue Trip

enable cheats...L1+R1+R2+select.
god mode...hold L1+R1+R2,then press up,down,left,right.
infinite weapons...hold L1+R1,then press up,down,up,R2.
mega guns...X+R2+L1+R1+down

get Goliath...triangle,L1,R1,X,L2,L2.
get Nightshade...R1,R2,L1,L1,X,O.
get Helicopter...L1,triangle,R2,triangle,triangle,R1.
get UFO...R1,square,X,square,L2,O.
funtopia(challenge mode)...X,O,L2,X,square,L1.
Gulch (challenge mode)...X,square,O,L1,L2,square.
Boss1 (challenge mode)...O,R2,R1,square,L1,L2.
infinite turbo...square,X,O,triangle,R1,R2.
infinite jump...O,square,R2,X,triangle,R2.
extra armor...R1,triangle,R1,triangle,L1,square.
x2 pickups...L1,L2,O,L1,R1,square.
boss2...O,O,L2,L1,triangle,triangle.
boss(big daddy)...square,triangle,O,O,R2,R2.
demo...square,square,O,O,triangle,triangle.

hold triangle for all of the following:
shield...up,right,down.
stun...right,left,up.
steal cash...left,right,up.
rear stun...right,left,down.
mine...left,right,down.
jump...L1+R1.
up on left wheels...up,down,left.
up on right wheels...up,down,right.