Hello,
I have got some bad news about the Linux support for Pawn of the Dead.
Unfortunately, I am having technical problems with our game engine (Unity) and Linux. To be precise, post-processing image effects work extremely buggy on OpenGLCore. The game can't be shipped in this state. So I need to let you know that the Linux support will wait at this point, it will be come when we fix the problem with Unity.
I am a supporter of the concept of free software and OS's. I don't expect so much Linux players for Pawn of the Dead, but I still want to support Linux for it, like I did in Clown House and Graveyard Shift.