Good news for Linux users: You can play the game on your Linux natively now! No need for emulation.
I managed to solve that post-processing bug that prevented me from publishing the game for Linux. It has a minor bug now, though: At the first time I launched the game, mouse cursor didn't run. I need to launch the game twice, then everything works perfectly. I'm currently investigating the issue.
Please let us know about your Pawn of the Dead experience in Linux, I'll do my best to make it better.