It looks nice, I like the mash up and the controls are good (the collision feels fair).
Unfortunately, I fail to understand what the craftables are needed for. The boat seems self explanatory, but what happens when I get more of them? What are the other items for? What is the point of shells and fish?
I also managed to break the game when transition back from water to land, where my runner is no longer visible (and seemingly also not actually on the world, as the game keeps running and running).