The Sky Is Falling! (Game Jam edition)

Aaah! AAAH! This is the end! Game over, man! Game over! D: D: D: This is both what's happening in the game, and what's happening in my head as the deadline approaches. WASD Movement, Choose Upgrades (you must), Survive 16 Waves (may be impossible), Attain The Golden Corn (may be transferrable to the afterlife, terms and conditions may apply, consult with your deity to determine if The Golden Corn is right for you) (((TODO: Add lil serious note about jam.)))