Nice job with the character sprites! The gameplay was decent, with an original concept. The audio was pretty good, too.
What proved to be a huge problem for me, though, was that the red portal's movement keys were reversed. Due to this, the best tactic for me was to only move the blue portal.
Another issue is that the power-ups can only be seen as text in the left corner, but you don't have much time to look there while playing. It'd be better to have some indicator on the player character.
Noticed two typos in the main menu, "nomral" and "spwan".
Otherwise the game feels quite polished, so good job!