The mechanics were solid, but there would have to be a gradual increase in difficulty if this were turned into a full game. Something like the game speeding up over time or enemies becoming harder to beat. Adding a delay after the player attacks would make combat more strategic so you can't just spam the mouse button. The sound design was haunting and I love it. The lack of music make those little "twang"s when you pick up shrimp that much more powerful. Good work!