During play, press F10 and enter the following codes: 

taklit_marion on      God mode
taklit_marion off     God mode off
azerim_sophia         Health kits and herbs
urgon_elsa            All weapons
makemeapirate         Turn Indy into GuyBrush from Monkey Island
fixme                 Will move Indy when he's stuck
version               See game version
polys                 See polygon rates
coords                Coordinates   
framerate             Display frame rate   
mem                   Display memory information 
toto                  Machine gun  
deriver               No clipping mode   
horse                 Give Indy a horse   
pop                   Suicide   
endcredit             View credits