Extract manually Kmod english.ucs located in the engine-locale-english in the folder with the same name but located in your hard where you instaled the game...(you should now have in the engine-locale-english 2 files: kmod english.ucs&RelicCoh english.ucs)
Extract the rest in the game's main folder...
Modify target for a shortcut of the game's exe,by doing the following: after the RelicCOH.exe" let a gap and then add this: -dev -modname KMOD...exactly the same way you see it
Have Fun;)