Hit enter and type: (+ turns cheats on, - turns them off)

+zool - Invincible
+chunkey - Always chunky
+superchunky - Chunk factor
+version - Game version
+drdeath - Max Damage
+shootall - Clicks not required
+sixdemonbag - Get 150 of all!
+loefervision - No fog
+xrayvision - No textures
+minjooky - Char very small
+maxjooky - Char very big
+checksinthemail - 999999 Gold
+sniper - Sniper(?)
+movie - Record a movie (use -movie to stop)
+mouse - Enable mouse
+rings - Enable selection rings
+potionaholic - ?
+faertehbadgar - ?
+resizelabels - ?
+GUI - ?