I love it. 8-bit version of Portal. So cool. So fun.
I did think the shooting through portals was a cool mechanic at first, but after a while I found it more frustrating because I would come out of a portal and then just insta-die. I got caught in a cycle of dying a few times. Not a deal breaker, but less fun the more I played.
Loved the general idea though. A well executed little game.
D