Amazing art and music style. The narrative slides are gorgeous and love the soundtrack too.
My only frustration was that the crabs recover so quickly and you yourself take so long to recover both from swinging your weapon and from getting hurt. The second level felt particularly unfair at the beginning.
My favorite level though was the last one with the fishes as it takes a lot of coordinating to manage jumping, attacking and dodging enemies. Overall good fun and I did feel accomplished when I got to the end.