I have updated the level, fixing the void reported by ortoslon, and the non-solid floor tile reported by Healy. Talps reported about a void "above the yellow key", but I'm sure that's not possible, the description seems to refer to the same void reported by ortoslon, which would be over the blue key.
You can download the updated version here:
Tewniletes 1.1I would like to thank everyone for the feedback. I love that very few people posted here but the opinions are very different, some even complete opposites, like how Healy says his favorite tileset is the snowy one and GrayFace actually seems to thing that's the worst one. Or how yohji's favorite area was the caves while I thought that was the worst one, I feared people would think it was too big and boring. For some reason this makes me happy