This game is also available on PC.
X,X,X,X,R1,R1,R2,L2,SQUARE after that you have to get to the second level and pick up the shotgun ammo in the tomb when you dont have a shotgun then go to your inventory and click on the shotgun ammo and it will be your pistol and then press L1,L1,L1,L2,L2,L2,L2,L2,R1,R1,R1,R1,R1,R2,R2,R2 then put it away and take it out again. It will now shoot nuclear missiles.