The puzzles weren't super hard or anything, more focused on platforming. But I enjoyed what was there.
The characters are quite sticky, not sure if that's intentional. On level 5 of the second couple I only had to use the door switch, because I could pseudo-walljump my way over, maybe that was intentional as an alternate route. And on level 6 I had the shrink person follow the falling block in the bottom right down off screen, which didn't reset them, had to restart the level, very minor things :)