That was fun! It was definitely enjoyable shooting the enemies and collecting the gems. I found my way around fairly well for most of the time, but at one point I found myself behind the game area and had collected around 32 gems. I then walked back and glitched back into the wall where the door was. That was actually pretty fun too TBH, but if you're looking to create a more linear experience, I'd suggest making the path a bit more apparent to the player and have it circle the player back to the beginning. Otherwise, again, I had fun playing it! Good stuff :)