Nice, I enjoyed this. I kind of liked figuring out what I was supposed to do, but it might benefit from some hints? Like you pick up the first crystal and messages says "one more to find..." or something. The next crystal could hint at the end of the level. The bomb and the place to use it was pretty clear. I found a key and opened a door, but it didn't seem to go anywhere? I made it to a "You win" screen, which was a surprise.