Really liked the game, it had a very cool vibe! I also specially like the buttons that reveal parts of the levels design. It is adds a very nice surprise factor. 

Nice platformer! I particularly like your choice of main character and background music - it fits the vibe you were going for perfectly. A couple of things I noticed:

• Especially in a platformer with lots of vertical movement, it might be a good idea to zoom the camera out a little and/or only make the camera follow the character left/right and not up/down. That way, even if the character jumps, you can still see the ground that you're trying to land on. I don't know what game engine you used, but in Godot, it would only take a minute or two to set something like that up. Worth considering for your future games.
• The bounce pads and the buttons use the same sprite, I think. It's true that they're different sizes, but it would be easier for the player to recognize at a glance if they had different appearances, too. It could be as simple as changing the color or making one thicker or something.
• As others mentioned, the spikes were challenging. I think the gaps between the spikes could have been made just a bit wider to make it more forgiving. There's a difference between a skill challenge and the game expecting a human to be pixel perfect 😉

Overall, these are just nitpicks I noticed. I loved the atmosphere you created. I could easily envision this as a full game with a poignant story. I wonder what it is Ennui found? Well done!

Great platformer! I really enjoyed the jump pads and the buttons you had to trigger to make more platforms too! The spikes were ehhhhh.. I wish the hitbox on them or the player were a bit smaller at least. But the checkpoints made even that a lot less frustrating! Great entry!

great game, maybe if you make the spikes colisions smaller it will feel more fair to play 😊

nice platformer, good use of existing art

Nice game!