Goblin Slayer, Vol. 6 (manga)

He does not let anyone roll the dice.A grudge match kicks off between Goblin Slayer and the goblin champion who thirsts for revenge. Barred from the use of fire, water, or poison, though, what secret weapon will Goblin Slayer use to dispatch his mortal foes this time? Will the great mystery of the ruins beneath the water be laid bare once and for all...?