Like the theme a lot - presenting the struggles as in-game mechanics is so much fun! I had deja vu from your tutorial because we did something similar with trying to describe everything in-game :D Overthinking hits home a lot too, so there's that!
The style is consistent, unique, fitting and cool. The bullet patterns are a bit repeating - I'd say there's a lot to play with in this setting, but given the jam time constraints, you did a good job. Agreed with others that the best strategy seemed to be "rush and pacify everyone ASAP".
And the main menu background!
P.S.: Grasshoppers are nice! Why would one attack them? D: