Slave Zero

In the game, press "T" (Chat key), then:

The game moves the health and ammo locations when each level is loaded, so do a new search for weapon one ammo. When this is found, freeze it at hex 2c 01. Weapon two will be four bytes more. Freeze it at hex 64. Weapon three will be four bytes further. Freeze it at hex 32. Health will be hex 18e less than the address of the first byte of weapon 1. Freeze it at hex c8.

CREDITS
M00_INTRO
M00_STARTUP
M01_A
M01_B
M02_A
M02_B
M03_A
M03_B
M03_C
M04_A
M04_B
M05_A
M05_B
M06_A
M07_A
M07_B
M07_C
M08_A
M08_B
M08_C
M09_A
M09_B
M09_C
M11_A
M11_B
M11_C
M12_A
M12_B
M12_C
M13_A
M13_B
M13_C
M14_A
M14_B
M14_C
M15_A
M15_B
M15_C
MULTI_4_CORNERS
MULTI_ARENA
MULTI_BOXOFUN
MULTI_COMPLEX
MULTI_DELTA_FAB
MULTI_GRUDGEMATCH
MULTI_HOUSEOFCHAN
MULTI_JUNCTION
MULTI_SLAYERTON
MULTI_STREETS
MULTI_THE_TOWER
MULTI_TUNNELS

Die at the same time you kill a Boss. This is best done when fighting Revenent Prime. Get him down to very low health and wait until he starts to destroy the building you are standing on, then let him have it. As you fall to your death the game will continue to show a short FMV sequence, and you will start the next level with 0 health. Enemies will not be able to kill you, but you can still die if you fall off the level. Note: The health warning will constantly sound.

Go in you your SZ folder (by default C:\Program Files\Infogrames\Slave Zero) in there you should see the szOptions.ini file. Open it and under [Settings] you will find these:

Game Mode=1
Gallery Mode=0

Now, make it look like this:

Game Mode=0
Gallery Mode=1

Now, when in the game, you are invincible, and have unlimited ammo! You can also press "R" to fly.