Neat and simple. I played to day 5.

I was able to figure out the game after a bit of messing around, seems to me the most critical thing to upgrade is health since its game over when that goes to 0. I'm assuming you ran out of time as the purpose of the other upgrades isn't that fleshed out (kinda happened to me as well), but ya it looks to me like you're trying to combine rhythm genre with top down survival. Pretty interesting concept!

I don't really understand the upgrades but the fishing mechanic was cool!