Now I got going. Found the gun and progressed a little more. A lot of stuff, maybe especially the HUD feels really polished. Seems like a nice game.
Don't remember how it worked now, but I think weapon selection while pressing Q would work really nice with mouse mid-button scrolling. Speaking of HUD, I think I might have found a glitch: the game got stuck during the intro when I had activated the inventory too early before the dude started talking.
For the mobs, I don't know if I was clumpsy/could have sneaked a little better but I lost a lot of life early on which I never got a chance to regain. I think beginnings should be about getting to know controls, game and character. In other words I would have liked it a little easier / more forgiving (and a skip intro option for us failing on first tries).