All Guns:
Pause the game and higlight wepons, the hold right, L2, R2, circle, square, and X. If you entered it in right you will get infinit ammo and all the guns for that level.
Select Mission:
pause the game, then higlight options, next PRESS X. higlight mission select, then, hod left, L1, R1, select, square, and X if you put it in right you should be able to pick any mission.
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