Linux user here, decided to check out the game and so far the concept is simple. I can't say it's too hard or too easy. Of course I can't demand anything out of someone who put work into a project like this, but there are a few problems with it I wanted to mention. I'm not sure if it's just me, but the sensitivity feels terribly low. There's also the occasional problem of the entity spawning in the room with you, and because of the low sensitivity there's not much time to react. I love the upgrade system and the hazards are very manageable. The health system itself is very good too, since just instantly dying to a random hazard you couldn't react to is no fun. The recharging battery is also awesome.