A fanmade 2D version of Splatoon.
Seems like it could be promising, and I like the Cave Story-inspired player sprite, but I've got some suggestions.
1. Change it so when you're a squid, you shoot off falling particles that change in rate depending on how fast you're going. This way it both looks better and adds the stealth element from the real game.
2. Change aiming to be mouse-based rather than depending on which way you're pointing. Along with this, change controls to be WASD based
3. Make being a squid faster and/or being a kid slower to match Splatoon better.
4. Fix some of the minor bugs it has, but that's obvious.