Cheat Codes:

During gameplay press ~ to display the consolde window. 

Then enter one of the codes.

 

Result - code

  

Jet pack - give jetpack 

Force field - give forcefield 

Extra life - give life 

All weapons and items - give all 

All weapons - give ammo 

Unknown ? kill

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toggle r_timings 

toggle r_stats 

toggle g_debug 

camera camera 

camera player 

give all 

give ammo 

give jetpack 

give forcefield 

give life 

kill 

toggle g_p_god 

pause 

toggle g_map_info