To activate these cheats pause gameplay and hold L1+L2+R1+R2 when you hear the sound of a sword you know the cheats have been enterd correctly

Restore health
triangle,down,X,up.

Restore ammunition
X,down,triangle,up.

Add 1.000 experience points
X,down,down,down

Level 2 skills
circle,right,circle,right

Level 4 skills
triangle,up,triangle,up

Level 6 skills
square,left,square,left

Level 8 skills
X,X,down,down

Invincibility
triangle,square,X,circle

Unlimited missile weapons
square,circle,X,triangle

Devestating attacks
square,square,circle,circle

All combo upgrades
triangle,circle,tirangle,circle

Small enemies
triangle,triangle,X,X

Slow motion
triangle,circle,X,square Powered by Coranto [an error occurred while processing the directive]