Graphics look great, sounds fit the vibe, there seems to be a good amount of upgrades for a jam game!
The problem is the gameplay, you're basically staring at the crafting part at the top right trying to it as fast as possible? Is there some strategy that's not just trying to be as fast as possible? Could have used a tutorial for sure since it took a while to understand how to defend at all.
The idea seems like it could be fun (as in crafting/drawing an object to defend) but this didn't quite get there. Not sure how to fix it, maybe some different control scheme so you can look at what's happening in the game instead of just the corner.
Hope I wasn't too negative, everything else was done really well!