Worth noting: Black lenses and sunglasses. SUNGLASSES, MAN. Black lenses are frustratingly rare drops from demon eyes, though. Me and Bust3r went through several nights in a row (including one that randomly spawned 5 EoC's in a row and i have NO idea how that happened, but lots of easy demonite!), and we only found 3 black lenses. So yeah, prepare for frustration.
Also, Meteor Armor now makes the space gun free to fire. Holy shit.