Wow, absolutely incredible! Stunning aesthetic and very well polished design. I lost about half an hour getting sucked into the gameplay loop, and could feel myself getting consistently better as time went on. I love that you introduce some more mechanics as the player gets farther in the level, like the spiky towers and the moving cover. A little thing that I found especially well designed was the little zoom in the camera does when you enter stealth, it was really great feedback to tell what state I was in. If I have any complaints, it is that occasionally a coin would go behind a spiky tower in the brief window that it was accessible, but other than that minor annoyance, this is practically perfect!

The controls and speed weren't working for me. I either crashed to the ground or flew up way too high. Impossible to stay hidden.