Dust isn't this bad, and it is more actiony than Unepic.

In particular, I note that in Dust you will never run into issues with inventory filling up, as inventory *can't* fill up. (There's probably a limit to the number of any given item you can carry, but I never encountered that limit during any of my playthroughs.) Hence, you really don't need to worry about inventory management in Dust.

Yeah, I have seen Environmental Station Alpha previously and thought about buying it over there, it seems to be nice! I have my eye on Elliot Quest too, also DRM-free on Humble. Has anyone played those?

Oh yes, man I also forgot about that one :) It is a great metroidvania, exactly how I like them! (Don't feel bad, I also gave up close to the end because of the same reason. Nevertheless, the game is really really great.)