Death's Gambit - Thalamus (No Damage)

Not all that hard of a boss since it's just survive but I will say that the design is really nice for this one. It really does a Lovecraftian horror well.

Steam Community :: Death's Gambit: Afterlife

Death's Gambit : Afterlife DLC - ALL HEROIC BOSSES 【 No Damage 】

Official Death's Gambit Subreddit

Death's Gambit: Afterlife story - Thalamus and Death (WARNING! SPOILERS!)

Official Death's Gambit Subreddit

Jean on X: The best portrait in Death's Gambit obvsly / X

Y'lnoth Deaths Gambit Wiki

Fast travel, Thalamus, and Ylnoth - New Game Plus (NG+1) - Death's Gambit: Afterlife - Episode 26

Collapsing Nightmare - Death's Gambit: Afterlife Walkthrough - Neoseeker

Death's Gambit: Afterlife update out now on Switch, patch notes