It opens and runs pretty well, but theres a part where you need to talk with cold wolf i think it was his name, i tried over and over talking with him, with different Proton versions, etc , Nothing worked it always softlocks there!!!! . In my opinion its not worth my time waiting for a patch or something that lets me play the game. I suggest playing the original game, or better playing all the Stalker games through OpenXray, a much better way to play these games.