I found a trainer for an old version of this game. I never tested it on the Steam version I have.
This table has been tested on V1.5.500001.
Options are:
Infinite Ammo
Infinite Clip
Infinite Health
Unfortunately it's still possible to die, even with Inf Health on. Some items like grenades and rockets can kill you instantly. You can also die from falling and if you fail objectives in the game.
Any problems let me know. There seems to be a lot of pointer paths in this game.
How to use this cheat table?
Install Cheat Engine
Double-click the .CT file in order to open it.
Click the PC icon in Cheat Engine in order to select the game process.
Keep the list.
Activate the trainer options by checking boxes or setting values from 0 to 1
Got the game for free on steam (V1.5.500001), I found the clip pointer failing in a couple places and did my own scan using some pointer maps, this one seemed more stable:
Never got a changeable address for nades and never bothered tracking down health though. And here's a [Link] ~80mb in case it's useful, I also provided the final ptrscan files in an attached zip (30 paths, ~3 kb) in case it's not entirely stable for someone either.