Overall, I enjoyed the concepts behind this game! It's a very unique platformer, and I like that there are so many added elements that show up later on. They make most of the later levels very fun!
One thing I would note though is that the jumps to get to one block level higher are very difficult (like in the second level). It's very tough to tell where you need to position yourself to launch onto the next block level higher, and it seems that position is very precise. I think this would not be too much of an issue if there was some visual point of reference to line yourself up with, like if the default floor was tiled so that you can line yourself up with those lines. Or, alternatively, maybe the jump height can be increased very slightly (or maybe just have the gravity be lower), just so those jumps are easier to make. All the other parts of the game were great, but whenever there were these jumps the difficulty was much higher. I feel like it took me a long time to get through everything, I got a time of about 22 minutes haha!
Besides those specific jumps, I enjoyed the game!