Hahaha, the player being way too fast was actually only for debug purposes, which I accidentally left in. I reuploaded the game with the player moving much slower. The accidental original build had the player move 4 pixels per frame, now it moves 1 pixel per frame, with the sushi being able to bring you up to 2 pixels per frame. Hope that fix makes it better, but if you do prefer the faster movement, I'll add it back in.
As for enemies, I have over 4 more already fully implemented, and I should have more enemies, powerups, and even a boss level or two added in the final release version. I'm shooting for at least 30-50 levels come release.
Thanks so much for playing mate, I'm glad you liked it!