Dabilahro is a large sword used by Elite Knights of the Vigoorian Empire known as Vigoorian Berserkers. Generally it weighs about 100 lbs, making it difficult to wield. Due to the weight of the Dabilahro, Ryu Hayabusa gets knocked off balance swinging it from time to time, on the other hand it does immense damage, and can be used to as a blunt weapon to crush boulders. You can get it from Muramasa by exchanging Scarabs for it, the amount of Scarabs depends on the difficulty, 20 Scarabs for normal.