I've put in about 5 hours of attempts at killing the final boss on Apocalypse difficulty, and run into a few different issues. I went for a DPS build and was doing alright, but every time when the second phase boss was at 1/3 health and he's teleporting you between realms, I kept getting teleported somewhere in the glitchy realm where I would fall to my death immediately...
I got fed up and tried a pure tank build, which has been working great, until recently when my Crystal Heart relic will sometimes just not heal me... which is a big deal because that's the core of that entire build. Has anyone had similar issues? or does anyone have any other suggestions/methods for beating him? Thanks.