Pause the game and enter these codes
Maximum fuel & armor:press select, L2, select, R2, triangle
triangle, triangle, circle
Maximum weopons:press select, L2, select, R2, L1, L2, R1, R2
Cycle through gun modes:press select, L2, select, R2, select
select, select
Summon wingman:press select, L2, select, R2, square, square, square
circle
"Perfect" pause:press select, L2, select, R2, down, R1, R2
Mission skippress select, L2, select, R2, triangle, triangle, triangle
down, down, down
Upgrade current weaponpress select, L2, select, R2, L1, L1, R1, R1