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Mortal Shell 2 Merrick Guide: Shop Stock, Healing Upgrades & Louis

Updated Aug 31, 2026 锝?The merchant in Marrow Keep's east wing
馃幆 TL;DR: Merrick runs the shop in Marrow Keep's east wing (with his Great Dane, Louis). His two healing upgrades should be your first purchase 鈥?they make early bosses survivable.

1. What Merrick Sells

ItemCostWhat it does
Revered Gland1,500 coinsAdds a charge to Mether's Pulse (healing flask)
Synaptic Vessel1,500 coinsRaises health restored per charge
Acolyte's Stone2,000 coinsTarstone sold only here
Unwieldy Stone2,000 coinsCharged heavy attack that heals on kill (higher levels)
Weapon location mapsPer weaponMarks the pickup on your map
鈿狅笍 Buy doesn't auto-apply: buying a Revered Gland or Synaptic Vessel does not automatically upgrade you. Take the item to any Beacon, open the Mether's Pulse menu, and spend it there.

2. How to Unlock Merrick's Shop

His shop is closed on your first visit and no dialogue opens it. Fast travel to any Beacon, then return to the hub 鈥?his stock is live when you come back. He hands you an Axe and Dagger location map as an apology, so the trip isn't wasted.

3. How to Pet Louis the Dog

Louis refuses the Harbinger in most Shells 鈥?but Proxima the Broodseeker is the only Shell he accepts. Equip Proxima, walk up to him beside Merrick's counter, and the petting prompt appears.

馃幆 Bottom line: "Buy both healing upgrades first, apply them at a Beacon, and fast-travel away and back to unlock the shop."

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