Type in the following codes during gameplay: 

COLIN-Increase To 20 Lives 
DEBUG-Debug mode 
DRAKENUKEM-Refills Time 
ENTERSANDMAN-God Mode 
IDKFA-Reduced To One Life And Very Low Health 
KIERAN-? •NEUROTECH-Free Life 
ONEREALITY-Refills Life 
PLUGANDPRAY-Free Smart Bomb 
RADIOHEAD-Finishes Level 
ROCKETZRULES-5000 Points