Overall a very enjoyable experience! The music is something I'd listen to even not playing, great track. The combat and procedural generation are a great touch, hardly had any questionable obstacles appear. I had one area where the key spawned at the same time as a large red potion on top of some spikes, so I was wandering around for a while looking for the key, but not seeing it since it was hidden (maybe make sure the key is top layer when it spawns? maybe clink noise to indicate it spawned?).