Codes
Invincable= down, L2, Square, R1, Right, L1, left, Circle.
All Weapons= x, triangle, l1, Up, Down, R2,<,<.

Master Level Codes

Mission	Password
2	610QNNFT35
3	F!R251P1FD
4	RBB4M6HRST
5	QWC5CS83QS
6	NJJ64RFRPM
7	N1J74MYSPR
8	811TMQ8W64
9	7KKNL7D443
10	28RFDDS5YX
11	C66YZLSGGG
12	GR85XJVNBD
13	C33V2DHGHK

Level 2 Codes

2	7GGLPXL746
3	YGZLPX2!56
4	XHHSNYB965
5	75NK!VGZZO
6	C2253RNRML
7	NT!3JRNDCB
8	8LLT8KRV02

Level 3 Codes

10	!6PQGGJVOZ
11	WHHTNNPS65
12	O1JQYV3N3
13	5MMD72GFZ1
14	HK25JRDQNL
15	S772MKWKCF
16	78RB35L1VX
17	J226DG5PNL

Map all objects
Pause the game and press: Triangle, Triangle, L2, R2, L2, R2, R1, Circle. Now all objects(including enemies), items, weapons, and secret switches will appear on the map.

Map all lines
Pause the game and press: Triangle, Triangle, L2, R2, L2, R2, R1, Square. Now all walls and boundaries will appear on the map for the current stage.

Weapons, Ammunition, and keys
Pause the game and press: X, Triangle, L1, Up, Down, Left, Left(twice). Now all weapons, ammunition for them, and keys for the current level will be available.

Level Select
Pause the game and press: Right, Left, R2, R1, Triangle, L1, Circle, X.

Transparent Walls
Pause the game and press: L1, R2, L2, R1, Right, Triangle, X, Right. Now your character may see through one layer of wall or sprites.