On last week's Patch 10.1.5 Fractures in Time PTR build, new achievements were datamined for the Dawn of the Infinite Megadungeon, including an Immortal-style achievement, Put That Thing Back Where It Came From.
On this week's PTR build, an award has been added to the achievement! Completing the Immortal achievement awards an ensemble that teaches the Infinite version of the Dragon-themed armor added in Patch 10.1! Currently, it seems like this ensemble teaches all 4 armor types, which means you only need to complete this achievement with one character to get them all.
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