For someone who plays platform fighters competitively, this game has everything I've wanted from the genre. The slime mechanic is very inventive and I think other games will take inspiration from it. The campaign is pretty alright (a miracle for the genre). The characters are all very well designed and everyone feels like themselves.
Right now it's still pretty buggy, and I wouldn't recommend it to casual players at the current price, but I think it's the best competitive platform fighter since Rivals of Aether.