Press the ~ key to bring down the console. 
 And type the following commands for the following effects. 
 God - For God Mode 
 Give All - For All guns and ammo 
 Noclip - for walk through walls. 


 Weapons and ammunition
 While playing a game, press ~ to display the console, then type one
 of the following codes:
 
 give ionripper
 give phalanx
 give trap
 give mag slug
 give dualfire damage
 
 Level select
 
 Press ~ to display the console, then type "map [level code]" using the
 following information to skip to the corresponding level:
 
 Name - Level code
 
 The Swamps - xswamp
 Sewers - xsewer1
 Waste Sieve - xsewer2
 Outer Compound - xcompnd1
 Inner Compound - xcompnd2
 Core Reactor - xreactor
 The Warehouse - xware
 Intelligence center - xintell
 Industrial Facility - industry
 Outer Base - outbase
 Water Treatment Plant - w_treat
 Badlands - badlands
 Refinery - refinery
 Lower Hangars - xhangar1
 The Hangars - xhangar2
 Strogg Freighter - xship
 Cargo Bay - xmoon1