Cheat Mode:

While playing a game, press ~ to display the console window, then enter one of

the following codes.

noclip                   No clipping mode. 
give (item name) (1-100) Spawn indicated item and number. 

Item Names:

Use one of the following values with the “give (item name) (1-100)” code. Note:

The weapons are limited to 1 as the number value. Ammunition are limited to 100

as the number value.

machete 
colt45 
machinegun 
rifle 
bazooka 
colt45ammo 
machinegunammo 
rifleammo 
bazookaammo 
backpack 
grenade 
landmine 
 

Thanks to Revolution reader eRiA!