32 Fear on the Surface is hard y'all
Had [Redacted] at 100hp with 1 sec left on Engraved Pin... trying to not cry.
EDIT: I DID IT! Used Moros and ended up with a Scorch+Blitz build that really didn't have anything special going besides a Rare Trusty Shield and a lucky healing Transcedent Embryo at the end. Oh, and I did get a Heroic Nitro Boost + Lovers + Divine Dash that was giving me plentyyyy of invulnerability.
The biggest change that really helped me out was getting rid of the attack speed and Scars Vows and going full in on Pain. I was no longer getting stun locked by common enemies with fast attacks or tracked like crazy by enemies who can turn, even without Invulnerability the ability to dodge and predict attacks meant I was hardly ever taking damage. Entered each biome with full health.