I really like the graphics and the sounds! The pixel art is really polished and cute, it fits the game! The movement of the squirrels is also really well done, they feel very lively and playful! It kinda makes me sad I have to kill them ;)
There's some latency in the movement of the character though which makes it a bit annoying to play. I also think that having the character move straight instead of diagonal would make it more intuitive to control (and I don't think it would hurt the isometric view of the playground). It also makes it a bit hard to hit the squirrels.
I like the concept though and with some polishing to the character, I this could be a very fun game! Thank you for making it :)