This plays a bit like an good user-made game made in my middle school obsession, ZZT. The sliding puzzles, rock reflection puzzles, simple inventory, and real-time fights could all be built easily in ZZT.
I really like the fact that it has a tutorial and in-game messages. I think, it would be a lot nicer if it moved to a standard rouge-like time system. Also, it's pretty slow in my browser but, I can forgive that.
Either it's running too fast on my computer, or this game is nearly impossible. I have a feeling it's a little bit of both. For example, I have to save the game every time I'm about to approach an enemy, as it will invariably take half my life about 90% of the time, so I have to replay it over and over in order to have any chance of getting through a room.
I can't get past the checkerboard because for some reason the numpad's diagonal keys doesn't work and the letters are completely unusable from a dvorak perspective. This really needs a key customizing feature, no matter how crude.