Gods Will Fall

Note: I've seen reports that this is buggy and may not unlock if you use poison to drain your health.

This one seems like it will be a pain but it isn't too bad.

First things first you need to get some range weapon items, throwing swords are fine but ideally you'll get the bow and arrows. I found these both show up pretty regularly on Belenos's stage.

With those in hand make your way to Breith-Dorcha's fight. Get her down to low health then run away. Eventually she will start spawning maggots. These always seem to do 1 damage attacks regardless of difficulty so use them to get you down to one health pip. All the while staying away from Breith-Dorcha. Once down to one pip take out your range weapon and kill Breith-Dorcha.

This will also net you