Cheat Codes

Use the followings as your name, you will have special cheat:
POOSLICE - Type at startup screen, then during game type :
ALT C - Complete level
ALT T - Teleport agent to cursor point
SHIFT Q - To bring all agents back to life, with massive weapon energy, incredible health and all mods& weapons. (Warning, doing this will screw your save game if you return to the purple screens and try and save)

(You can still load in a save game and the cheats will still work)
Now in the equipment screen you can press (and hold) . (full stop) for more cash

Typing O at research screen to add more weapons/mods avail., and U to finish a day's worth of research.

Other Info:-

Instead of using play.bat type
main /w /m???
where ??? is a number from 1 to 108 and this will let you play any single mission, using default weapons.
(This lets you play many missions not actually available ingame)