By Alakelele
Experimented on the GOG version

1 Download and extract the content of this folder to your game's main folder, here's mine C:\Program Files (x86)\GOG Galaxy\Games\Independence War 2
2 Download Reshade from this adress https://reshade.me/#download
3 Install for Direct X 9
4 Download the preset from this adress https://reshade.me/#download or create your own combination
5 Enjoy