What a hard game lol.
The graphics are amazing, but one criticism is that the game should have a pixel perfect camera , it would make the make the game feel much tight and snappy, some pixelart styles work without it but a retro style game like yours would benefit alot from it.
The music does not loop, or so i think? But the soundtrack is very nice, as MegaStrimp said, reminds me of megaman!
Very nice game, good job!