It took me way to long to realize i needed to point my mouse to choose the direction of the portals.
But once i did it was very impressive. I don't recall ever seeing a 2D portal game like this, nice job. Would love to see more of it!
Only other criticism is i felt the fall speed was a bit too harsh, made it a little tricky, but sometimes tricky is a good thing so i didn't mind it too much.