No Monsters
At the SKILL LEVEL screen press Z, Z, X, X, Y, X, Y, X, Z.
Display Coordinates
At the title screen, simultaneously press and hold X, Y, Z, L, and R until the words "INPUT INFO ON" appear at the bottom of the screen. When you start a game the programming coordinates will be shown at the top of the screen.
Tiny Duke
Set the difficulty level on "Damn I'm Good". Enter the code for "all weapons" (the code for "god mode" helps also). Find an enemy. Shoot him with the shrinker. Without stomping him, shoot him with the handgun, shotgun, or chaingun until he dies, which is difficult, but possible. Wait a while and he will come back to life, only he will be tiny. To make them big again shoot them a second time with the shrinker. Enjoy.
Cheat Code Entry Screen
At the main menu, hold X, Y and Z for about 10 seconds. If you did it right the words "Input Info On" will appear on the bottom of the screen.
When you begin to play you should see some hexidecimal-looking code at the very top of the screen. Depending on what buttons you press the code will change it's hex numbers and/or letters.
Level Select
At the MAIN MENU screen press X, Y, Z, Z, Y, X, Y, Z, Y.
Bonus Game
To access the hidden sequel to DEATH TANK, DEATH TANK ZWEI, all you need is to have saved data from QUAKE. This will automatically open up the option to play the secret game. Otherwise, it can be accessed by beating the game after destroying ALL the toilets, urinals, etc. found in the game.
All Weapons
Pause the game and press Z, X, X, Z, Y, Z, Y, X, Y.
God Mode
Pause the game and press X, Z, Z, X, Y, X, Y, Z, Y.
