Various cheats
     Enter when the PDA is up on screen during gameplay

Code:   Effect:
2733    Enemies cannot see you
8700    All the Weapons
4394    Never miss
6422    Better protection
7663    Better damage
7018    All the Items
8745    Restore health
0132    Better medical kits
3815    Never run out of health
1554    Enemies cannot hear you
0926    Sneak
8249    Never run out of ammo