Cleared it as WAR yesterday and found the fight super fun, it feels like it might be harder for DRK tho as my DRK co tank felt he was low on mitigation pretty often (though TBN helped me alot as I was MTing), for the cabin add I went on Defiance used vengeance + thrill of battle to tank the TB, swapped to Deliverance and killed it without using IR (saved it to 5x FC on the train after that), head on I just mitigate and keep hitting him, there is one TB that I was low on mitigation and had to use Holmgang, for the bombs we tank swapped and I dropped it on the south, it seems you can also just drop it on NE while the party stays on NW but we didn't want to tax the healers even more when there was already so many deaths.

Worst scenario IMO is if the ghost wall is all the way behind and you have a chain and no IR, in this case my DRK friend had to provoke and use Living Dead, because the chain deals huge damage if you don't go near the boss.