Cheat mode:
Create a file named “debugconf.scr” in the game “data” folder in the game directory with the following lines:
!include(“DebugConf.def”)
NoLogos()
Cheats()
UseDeveloperKeys()
LoadCheatMenuParamsOnLevelStart()
Press [Esc] during game play and select “Dev Menu” option. The following cheat options are now available.
AI Nicks
God Mode
Cheat Mode
Magic Ammo
Charge Full
Restore Health
Give Ammo
Give Rifle
Give Grenades
Kill Active Enemies
Various bonuses:
Enter 735S653J or 585A926D as a code. This will unlock extra money for equipment in Single Player mode, extra money for character unlocking in Multi-player mode, silver weapons in Multi-player mode, and the Superb Ranger weapon that can be used during the first two chapters.
Very Hard difficulty:
Beat Single-Player mode to unlock the Very Hard difficulty setting.
Avoid losing momentum:
Jumping and switching weapons while in mid-air is a good way to help keep your current speed and momentum. This helps a lot if you find yourself being chased by someone in a multi-player game and are low or out of ammunition for your current weapon.