From the announcement:
A corpse, of course! The rowdiest crowd of munchkins ever to wreck a saloon is back for more in The Good, the Bad, and the Munchkin 2 – Beating a Dead Horse! Fight new varmints like the Cattywampus or the Eyes of Texas! Ride new steeds like Ol' Plug and the One-Trick Pony! And if all else fails, call in the new Class . . . the Cavalry!