The Halls of Reflection is are probably considered, by the World of Warcraft community as a whole, the most difficult and annoying heroic instance in the game. Frozen Throne has two other instances, but neither is really as frustrating as this one. The reason is because Halls of Reflection really stretches both the tank’s and healer’s skill, under a lot of pressure. Much like the original Oculus, back in the day, it is very hard to get through.
I have recently gone back and farmed myself some black icicle weapons for my dual-wield spec and watching some of my friends try get through it last night, decided I would put together this small overview and tips how I usually tank it.
Specifically, the first two bosses, Falric and Marwyn, in on themselves, are easy. The problem is the eight waves of mobs that spawn in between the boss fights; four waves before Falric and another four before Marwyn, each wave getting consecutively harder to get through.
In essence, the tactic is simple; there are two smaller chambers to the left and right from the entrance. It is, by far, easiest to control the mobs by bottling them at the small and narrow entrance. For us, as DKs, this is easy by laying a Death and Decay just few seconds before the next wave becomes active. Rest of the group should hide behind the small corners in the room, to prevent the mobs from targeting them first. Of course, they inevitably will but that is what the DnD is for. It will take the small initial aggro for you, while you group all the mobs and hit them with some real AoE.
I always tank this in my frost spec, because you really need to take everything out of your AoE in this encounter, and frost has the best AoE abilities from the three DK tanking specs. Each of the mobs have their special abilities, but only few are worth the mention.
Healers and casters, should, once the fight starts, back to the far wall of the chamber, to avoid silences and stuns (which can easily be a leading cause of tank death). There are two ranged type mobs, the dwarf rifleman and the human mage. As a tank, after laying down my DnD, I always back up a few steps, once the ranged type is within death grip range of the doorway, pull them in and rest goes smoothly.
Issues rise when eager dps starts on the mobs before I have a chance to pull the ranged in, because before that, there is no point wasting aoe spells on them. Another annoyance is when you have two ranged types, both the mage and rifleman. Usually then one gets left outside the chamber and a top dps dealer should run out and waste it as quick as possible. There just is no way to build aggro on it while you are dealing with rest of the group.
As for the rest, you want to focus the night elf priest first, if he is present. He can heal himself and his buddies. Next, I always go for the mercenary rogue, because he shadow steps and shanks people almost randomly. His poison ticks hit very hard, even on the tank, so kill him quickly. After that, it’s all the same and by that time, with only 2-3 mobs left, you healer should be getting some slack.
The bosses themselves are fairly simple. Falric is a healer test because he does a lot of aoe damage and can chain fear you. Much of the damage actually get received while everyone is feared, so as a healer, you need to top everyone up between fears. Usually the healer performance drops towards the end, so any extra dps is welcome to bring Falric down fast.
Marwyn is barely a breather compared to everything before him. He creates evil purple circles on the floor, usually under random players but other than that, he is a puppy. His Obliterate ability hits pretty hard and he can make his targets take more shadow damage and lower their maximum health but to be honest, I never had an issue healing through him, even with substandard equipment.