I really like the visual art style and gameplay. Although I find it hard to play because the long ranged enemies can just spam bananas at you and the hit box is sometimes hard to hit.
What if you added a special meter and it builds up when you attack an enemy? You can heal from the special meter by charging in place or spend the special meter for an AoE attack (like in Hollow Knight). Maybe Mouse is on a bike and she charges into the enemies from the left in a straight line as a special Aoe Attack?