Mountaineer Leggings

Mountaineer Leggings are a harvestable item obtained from dead Mountaineers, Close-Quarters Combatants, and Rooks. They are part of the loot that can be recovered from these defeated hostiles, making them a combat-gated source item rather than something crafted or found in the world as a fixed pickup.

Since they come from enemy corpses, the most reliable way to obtain Mountaineer Leggings is to engage and finish the relevant opponents, then harvest them before leaving the area. As with other corpse-harvested drops, they are tied to the enemies themselves rather than a specific location, so any encounter with those hostiles can potentially yield them.