I've played your game, it's nice, automatic update checker, that's great. The humor in it is good, really nice graphics.
Some nagative things, when the player is in the air, when pressing the jump button, the jump sound still plays, I would fix that. :) I don't want to seem like a, ya' know smarty-pants but Scores, thats odd, like 1 Scores, you could do it like that Score: 1. But if it's like, some kind of a in-game currency. it's fine.
About slow-mo, there's actually no positive things for it, when it's activated, the player, even doesen't jump, he just hops, you could leave that. But add a positive for that, like, you could one-shot enemies, if you would do that, make a cooldown for that. ;)
Overall: 9.2/10
I hope the game will be succesful! Have a nice day.