My brother & I got all five secret chips together, and we ADORED it. One of the finest mechanics I've ever heard of. Just letting you know, the Mac version is broken! : ( If you die, you can never come back. (Same with being warped back to the portals. It shows the graphic of being beamed back, but then you never show up.) All the very best-- I spent a whole week trying to find this game after seeing a Twitter post about it and losing it, and it was WORTH it.
Also, as a slight note, we thought our keyboard controls were broken when we got to the head-toss sign that says "^ + X", because it doesn't allow you to do anything yet when we haven't gotten the ability. I feel like you shouldn't put any sign there (or at least until you've received the ability)-- it gives people the thought that the controls might be broken.