I liked the "go home when you're out of bullets" mechanic combined with the bullets being my health! I got much better at the game when I realized that I should be aggressively pushing forward, but it does make an interesting dichotomy of how much I want to use my bullets to clear a path / facetank attacks vs. saving them for the Count. I rather enjoyed that the birds make an arena for the final showdown and the noises the Count makes before he lands.