This game is interesting. I liked that you tried to make a tower defence game in a week with this theme. Thing is I'm not sure it is fitting it.
I liked the graphics, UI elements and the overall art: it's a 5/5 for the graphics on my side.
The audio is average. The sound effects are hidden behind the music, and the music is ok but become boring very quickly.
I found innovative the way we do control a player inside of a usually passive tower defence game, that's good.
For the fun part, well. Game is super slow to start, and then the shop become unbalanced. Those two things. Also there are bugs, as you mentioned in your game page, which aren't helping. Game design is okay but simple overall.
It's a good project, you might try to continue it after the jam, maybe you'll make it awesome. Good luck!