The swamp is becoming my favourite. The enemies there seem quite varied compared to other biomes, loving running and jumping around water and logs, finding crypts and searching through them is quite fun and easier now that the pick axe got updated to smash through multiple nodes. The wraith spawn rate is higher so chain is easier to get and necessary for lots of things. And the ambience is nice and dark and gloomy, feels good sitting in a tree house looking out into the wet gloom from your comfy living room