This is fantastic! I managed to make it through to the end, but I had to watch CaptainCoder's recording to find a couple spots ^_^. When I got the hammer, the game trained me that the map would have icons for breakable walls, (and I saw no visible difference in-world upon first inspection), so I never even thought to look for them later :(.
At some point I noticed that if I died it auto reloaded and I had max HP, so I started doing that instead of using healing potions, and I ended the game with exactly the 4 I needed... without abusing that bug, it would have been really frustrating, as I likely would have been at 0 potions at that point :(.
Controls on gamepad played pretty great (despite the odd shift+arrows to strafe ^_^), and it felt nice and snappy and I love the visuals.