All instructions are included in EK mod package. Just copy unpacked ewiger folders to the game main directory and modify a shortcut properties of the game on the desktop according to instructions (for instance like this : "C:\Program Files (x86)\THQ\Company of Heroes\RelicCOH.exe" -dev -unlock_all_missions -mod Ewiger_Krieg). You do not need "unlock" - this command opens all missions, so if You want, ... You have to use a right version package of Ewiger Krieg to the same version of the game. But like I said - instructions are included in readme file. EK mod is excellent, so enjoy.
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