Some fantastic puzzle work in this. A really nice use of the two character switching mechanic, sending platforms back and forth to aid navigation was really nice, and then when the crates and falling floors came in, I had that wonderful moment of being stuck for several attempts and then the smart feeling of realization when I noticed what I had to do. Also really loved the art here, some nice detail like the little bob of the hair during the idles anims. I did eventually get stuck on the one where there was that 3x3 with the crate that you had to bring back over to the main platform (like level 5 or something).
But thoroughly enjoyable play session. great job!