Love the idea of using multiple game jams at once. Sometimes the limits the theme imposes helps inform game ideas, so doing three at once is kind of brilliant.
Nice game! Lots of polish, and the addition of random names for the chickens is a fun touch. It's a game-jam game so I can look past the relative simplicity of the game loop, but I will say that tying the 'screen clear' ability to your health pool is a fun twist on the 'vampire survivor' formula.