Linux full client download?

[davydm]

Good day

I bought Penumbra: Overture some time ago and haven't completed it yet -- one of the reasons being simply that I often can't be bothered to reboot into windows to play. I've seen that I can download a demo version, but I'm wondering if there is a way for me to download the Linux binary client only (since I have all the content on the original media), so that I can continue playing this game?

Would it be as simple as downloading the latest Linux patch / demo and copying the data files somewhere? I would like to finish the game that I actually bought (: