Impressive visuals! Can't imagine how long I'd take to make something like this!
Some comments:
Attacking feels a little slow at the moment. Try either 1 of these maybe?
- Make attacks faster/cancel-able
- Give destructable objects/enemies lesser HP (especially rock blocks that are blocking the way since too much of them with multihit HP starts to feel like an excavation job)
Also, maybe for character switching you can give each character their own focused specialty?
(Mococo as attacker, Fuwawa as movement etc)
Giving Fuwawa both ability to reflect bullets and double jump kinda makes Mococo a little redundant to switch to other than breaking blocks and activating character blocks.