I finished the game! It was fun trying to puzzle around the levers and lasers and such. I kept getting my controls mixed up but that's just 'cus I haven't played enough Pico games to get used to it, and the levels were small enough that even if I had to reset, it wasn't a big deal because I wouldn't be set back that much and I knew I'd be able to retrace my steps.
Also, the little characters are very cute, and the music doesn't drive you up the wall by the end of the game, the way lots of looping tracks do (and that's including the extra time that I was stuck on the first level! lol)