He is Coming achievements

Defeat a boss for the first time

Obtain a mythic item

Use the large golem

Get a cursed item from the crone

Use the Fairy Queen

Obtain honey

Travel to Misplaced Mire

Defeat every swampland boss

Defeat every woodland boss

Obtain a skin in kingmaker

Discover all cauldron combinations in swamp

Discover all of the hidden itemsets in swamp