Grimwalker lab

In Grim Dawn, the Hidden Laboratory is an underground area in Act 1, accessible through the Underground Transit. It leads to the Ominous Lair and features sections like the Living Quarters, Inner Laboratory, and Underground Jail, where The Warden, the Act 1 boss, resides. Additionally, Hargate's Laboratory is another underground area in Act 1, accessed through a trapdoor on Hargate's Isle, following the Slith quest