https://bugs.freedesktop.org/show_bug.cgi?id=80419
--- Comment #15 from theamazingjanet@googlemail.com --- SSH'd and tried dmesg like you said and attached. I've been trying apitrace but the game depends on Steam and uses a seperate launcher to start the game and can't figure out how to get a proper trace becaue of it. Launching what looks like the game binary directly (game.x86_64) and it still brings up the launcher.
Just this morning I was able to play without incident for ~ 1 hour for the first time, then locked up almost immediately in a mission again after restarting.