Press T then enter code:

Code              Effect
thereisnotry      Level Skip
whiteflag         disable 
deeznuts          force level up
eriamjh           fly
jediwannabe       invulunable 
red5              all weapons
wamprat           all items
yodajammies       mana
raccoonking       uber jedi
imayoda           light master
sithlord          dark master
5858lvr           show all map
slowmo            slow motion 
pinotnoir         restart level with current weapons