The bullet system. Rather than collecting regular ammo, players discover magical and mysterious bullets forged by Billy the Bulletsmith and scattered throughout the crypt. These bullets are arranged by the player inside the deputy's magazine, firing in sequence and combining in cunningly creative ways. Some spread poison. Others pierce armour or conjure lightning. Some ricochet between enemies, summon dragons, or enhance the rounds beside them. The combinations you build define every run: and no two runs look the same.