The concept is nice, and the last level is quite challenging. The best strategy seemed to be just doing the puzzles one at a time while having the other characters wait in a corner. The red+green color choice was somewhat uncomfortable to my eyes. The puzzles were pretty good though!
Thank you! I definitely think I can do more interesting things with the concept, but sadly I didn't have time for much level design or to develop the concept further.
In retrospect I agree on the red+green color choice – those tiles are actually from a classic (now public domain) puzzle game called Laser Tank, which I've played a lot, so I guess I've just gotten used to the colors over the years, haha.