First you will need a back up copy of Damnation. Open the game in wx360 (Provided Below). Click the plus sign next to the disc to the left and go to DamnGame > Config > Xenon > Cooked - Coalesced. Right click and replace the file with the modded one Provided below. After it is done replacing, just burn the game and Enjoy!

Feel free to try to edit the Coalesced by your self. There are multiple instances that have to be changed of one thing. Do not change the files size while editing, and only edit with a Hex Editor. You will find a good amount of Gears of War things in here. That is because this game is basically one big Unreal/ Gow1 mod. Maybe you can find some thing new to mod. Here is the video Demonstrating these mods.

Note: You must have a Flashed Xbox 360 to play this. You need iXtreme 1.6. If you do not have that firmware you will have to patch the ISO to play on lower firmwares. There is always a small risk when doing this. You will not get banned immediately but might be added to the next ban wave. But then again, maybe not. Enjoy.