I really like the samurai's design and some of the enemy designs. Honestly, the gameplay is really rough and trying to emulate the water is fine and all but its just awkward jumping.
Slashing also feels like it needs more impact and lacks range. It also doesn't seem to do much other than slowing them down, which I'm not exactly a huge fan of. Also, there are too many enemies just spamming in later stages that it kinda ended up making me adverse to fighting them and just forced to platform away.
The green squid foe is also tough and fast too.
Aesthetically, this has a REALLY good character design but the gameplay feels a bit imperfect, even for a platformer. But this is good effort nonetheless.