Cheat code:             Result:
cmd godmode             God Mode
cmd noclip              No Clipping
cmd giveall             All Weapons/Items
cmd selfsummon          Spawn Another Riddick
cmd kill                Suicide
cmd cyclecamera         Switch 1st/3rd Person View
unlock all Unlock       All Director's Cut Special Features
map #                   Load Map (#=Name)

Note: On the MAP command, use the names 
from the Install Directory\Content\Worlds.