All Working Z Cheats - Playstation

Full Metal Jacket mode
Enter "Square, Circle", [X], [Triangle], [Triangle], [X], [Circle], [Square] as a password.

Invincibility
Enter [Square], [Triangle], [Circle], [X], [X], [Circle], [Triangle], [Square] as a password.

Destroy enemy base
Press [Triangle] on controller two during game play to destroy the enemy base.

Level 5 door
There is a locked door in the third hallway in level 5. To open it, go to the very beginning and find the key by searching. Note: You can not find the key until you reach the door before heading back.

Level	Password
2	[Square], [Triangle], [X], [Circle], [Triangle], [Square], [Circle], [X]
3	[Square], [X], [Circle], [Triangle], [Triangle], [Square], [X], [Circle]
4	[Square], [Triangle], [X], [Circle], [Circle], [Triangle], [X], [Circle]
5	[X], [Circle], [Square], [X], [Triangle], [Square], [X], [Circle]
6	[Square], [Circle], [Triangle], [X], [Circle], [X], [Square], [Circle]
7	[X], [Circle], [Square], [X], [Triangle], [Triangle], [X], [Circle]
8	[X], [X], [Circle], [Triangle], [X], [Circle], [Square], [X]
9	[Circle], [X], [Circle], [Square], [X], [Circle], [Square], [Circle]
10	[Circle], [Triangle], [Circle], [Circle], [Square], [Triangle], [X], [Circle]
11	[X], [Square], [Circle], [X], [X], [Square], [Square], [Circle]
12	[X], [X], [Circle], [X], [Circle], [X], [Square], [Circle]
13	[Circle], [Triangle], [X], [Circle], [Triangle], [Square], [X], [Circle]
14	[Square], [Triangle], [X], [Circle], [Triangle], [X], [Circle], [Square]
15	[Square], [Triangle], [X], [Circle], [Square], [Triangle], [X], [Circle]
16	[Circle], [X], [Circle], [Square], [Square], [X], [Square], [X]
17	[Circle], [Square], [Triangle], [X], [Triangle], [X], [Circle], [Square]
18	[Square], [Circle], [Square], [X], [X], [Circle], [Circle], [Triangle]
19	[X], [Circle], [X], [Circle], [Triangle], [Triangle], [X], [Circle]
20	[Triangle], [Triangle], [X], [Circle], [Triangle], [Triangle], [X], [Circle]