This is cool! Reminds me of VVVVVV (http://thelettervsixtim.es/), which had a similar section where you controlled two characters at once. It's a little strange that the secondary character moves even if the primary one is running into a wall, but it looks like the puzzles require that.
Exactly. Except VVVVVV is insanely fast and reactive and sometimes requires lots of training (had a great time playing it) and repetition. This game is just slow :-( (but a great accomplishment nonetheless)