I liked the platforming aspect of this game. I ended up avoiding the blue orbs altogether because it seemed to just cause more problems if I collected them, but I don't think that was the intent. Maybe there should be a clearer indication of what the blue orbs do at different levels. Also, maybe these two ideas: 1. Have a sign that shows three orbs and points to a specific area that you can only use three orbs to complete, or 2. Be able to collect all the orbs, but be able to toggle them on or off depending on how many you need, and hitting spikes will cause you to lose a collected orb.
I also appreciated the red spike by the finish flags. Very tricky. Nice work!