Hello,I have a dishonored game disk that i borrowed from my friend and he has already used the cd steam key and i thought i could bypass the cd key prompt easily but now its proving tough i opened the disk and there is a setup.exe and some depotcache files with format .csd and .csm that i think are the game's main installation files now i opened setup.exe and a launcher pops up that automatically prompts the pc to pen a steam client that asks me to open a installer that first asks for the cd key so now i want to extract those depotcache files so please help me!