Item purpose
Tarstones are items that can be infused into equipment or the shell that grant passive effects or modify an action, changing the movements and actions of the Harbinger or the equipped shell. Duality Stone Effects in Mortal Shell 2 Level 1: Your Weapon light attack combo strikes twice Level 2: First attack only Level 3: First and Second attacks Level 4: All Attacks How to Upgrade Duality Stone Tarstones in Mortal Shell 2. You can upgrade your Tarstones by giving Franz the Etching Needle, a quest item that expands the upgrade options of the Tarforge in the Marrow Keep.
One is that you a charge heavy attack. There's also a version you extra critical damage for your charge light attack instead. They both cost resolve, but it's totally worth it.
Location and route
The Etching Needle can be looted from a chest right before fighting Magdalena, the Lady of the Woods Boss fight. When you see Ruk past the bridge, jump down the opening and turn right before the tunnel to find a small section with a bone chest. After you acquire the Etching Needles, make sure to equip the Tarstone and slay enemies to increase the experience.
Well, that chance is only 3% on paper, but in real conditions, it triggers so often that it's practically there all the time. You only need like six or eight glimpses to fully unlock it. By the way, if you want to find which of the candles to open, it's basically this route on the platform is the first.
Related videos
Watch the route and combat use
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