Well that last level was insanely tough, at least for me. This is due to the movement which doesn't feel lined up with the player especially when ramps come into play and you auto jump of it and go right into a spike. Since you can only redo your latest platform it's easy to accidently soft lock and require a restart of the level. I've seen a couple games with this idea, and in order for it to work the movement and platform placement needs to work together. Some music/sound would also help. I hope this doesn't discourage you, it must have taken a lot of work to even make this. Just needs some more polish and improvements. There is a lot of potential here. Good job overall!