Just a short post, for the people who purchased the game and want the Linux version can download the Linux binary here. I am patching it through the store and Desura too, but these things take time. You can wait, or you can JUST DOWNLOAD IT RIGHT NOW.
You will need to place it in the same folder as the game (hint : the folder the windows executable is in), and voilà!
You need the libraries SDL, SDL_Image, SDL_ttf, SDL_Mixer and SDL_Sound to run it.

If you find any bugs or need help with playing the game on Linux, email me.