Various Cheats
     All  these  codes  are listed in the readme file, but here you go
again: Code Effect

ALLAMMO                 999 Ammo for All Your Guns 
FLY                     Fly Mode 
GHOST                   Clipping Off 
WALK                    Normal Mode 
GOD                     God Mode 
INVISIBLE               Invisible 
KILLPAWNS               Kill All Monsters 
SLOMO #                 Slows or Speeds Up the game. 1.0 is normal 
SUMMON                  Add a Weapon or Item. (eg, SUMMON EIGHTBALL) 
PLAYERSONLY             Freezes Time Toggle 
OPEN MAPNAME            Warp to any map (eg, OPEN DIG) 
BEHINDVIEW 1            Puts you in Tomb Raider View 
BEHINDVIEW 0            Resets the Above 
FLUSH                   Flush Outs the Graphics Cache.