First bring up the console, just type "~" while playing.
 Type "sv_cheats 1" in the console to activate cheat mode.
 Then type one of the next codes:
 
 Code -  Result
 
 god - God Mode
 noclip - No Clipping
 give # - Give Item # (See Below)
 
 Give Items:
 
 Phaser
 IMOD
 Tricorder
 Health
 Ammo
 All
 Compression Rifle
 Scavenger Rifle