Milly is an explosive npc wearing a helmet (you can leave your hat on). She has 3 Warhammers not just one . But anyway. No joking right now . Warhammer is a weapon with really heavy attacks, but they are slow… Thralls are so stupid, that no matter how slow the attack is, they will stay to accept the whole freaking combo. But let be honest, npcs are no smarter at all .