The idea is interesting! I like that you have to collect resources and then use them to block enemies.
My suggestion would be to make it a bit more intuitive. Maybe you could add an initial panel with a brief explanation of how to play!
Definitely agree. Ran out of time but that initial instructions panel is imperative. Thanks, good suggestion. During the jam, maybe Ill make one and post it to the page info then add it to the in-game experience after the jam.