Unlocks many locks in the early areas. Unfortunately many places in Dark Souls are locked off completely until you can track down a key that'll open the door, gate, Master Key: Gotten by choosing it as a gift, or the thief class, at the start of the game. Dark Souls III Wiki » Items » Key Items » Keys Several keys can be found in Lothric, some of which are required to progress through the game, some just to open convenient shortcuts or optional areas. See which locks it opens in the MK section to the right, or on the Master Key page. keys Guide with all locations for … Note, that keys are listed here as a subset of all key items. Buy it for 5,000 souls from Domhnall of Zena after he moves under the bridge by Firelink Shrine. keys List for Dark Souls 2 including all their tips and uses. Ah the humble key.