Mortal Shell 2 High Lord's Keep Walkthrough

Approach

1. Work west from Outskirts of Mammon until High Lord's Courtyard is tagged. Ruk has a map perch next to this Beacon.
2. Optional: east of the Beacon, drop two levels by the jump pad for Besieged Ruins (PowerPyx dungeon #35).
3. From the Beacon, take the stairs to the air current. Ride up. Dodge the rolling Knight of Mammon.
4. Stairs on the right drop into the dark crypt. Another rolling knight uses the narrow hall.

Vellen and Lazlo

1. Push the underground cathedral to the end.
2. Vellen, High Lord of Mammon. Overhead slam has a long wind-up — dodge sideways, not back. Break tools and Eredrim's Shoulder Bash are the usual punish. Vellen guide.
3. The room behind him opens. Interact with Lazlo, finish the memory, Down with the Thickness unlocks.

Lazlo is a late Mammon Shell with the highest reported base HP. If Isaac is next, his spirit summon is Lazlo — worth bonding before Faded Citadel.