Downloaded it again, somehow it didn't have some required files. It works now. Thank you :)

I've just experienced this issue. Basically, if you're not using PulseAudio, but you have lib32-libpulse, issues arise due to how Unity has been compiled. Several solutions in that link, simplest of which is to remove the offending library. It might take a few actually useful ones with it, though, so have those in mind with the next 32-bit only binary.

Which makes this one seem simpler: ln -s /dev/null libpulse-simple.so.0 in the game directory. Fixed Tahira for me. Also, according to the Tahira dev this is fixed in Unity 5.4.

The latest update remembered me that I didn't thank the devs and GOG for the Linux port. This thread seems fitting at least for GOG, since JudasIscariot posted here. :)

So, thanks!