Requirements and loadout
Greatsword needs 28 Strength and 10 Dexterity to wield one-handed. It weighs 20.0 units. Check your equipped load before changing weapons so you keep the roll you expect.
Where to find it
Farron Keep, on a broken bridge in the swamp.
Infusion and field notes
Useful infusion: Heavy.
Two-hand it, then budget for one swing and one roll. Its recovery matters as much as the damage number.
Infusion and damage depend on your current attributes and the enemy's defenses. Compare the result in your own inventory before spending upgrade materials.