I really like the concept and its implemented very well, the player controls also felt very responsive and nice to use! Landing on enemies and taking them out also felt very satisfying, I particularly liked the attention to detail in the way that the cogs realistically turn one another too. The projectiles and the effects they add to the player also added depth to gameplay which was another really nice touch.
I had this as feedback on one of my jam games a while ago, but something for 3D platformers is having a constant shadow directly under the player so they know specifically where they're above as it can sometimes be hard to judge with perspective- I think this might have helped when at one point I was thrown quite high into the air, but apart from that the gameplay didn't suffer from this as the shadow that was there was personally enough for me!
Overall, I had a lot of fun playing and you've just got to love the parkour element that falling platforms have! Great game!