Project Lore

"y u do this?"

Halls of Reflection measures up as the hardest heroic by most people's standards. You may have heard of tanking in the nooks behind the bosses Falric and Marwyn for the first encounter, but an entirely new "strategy" has come to light for the second encounter that completely trivializes it. Called the "ledge" trick, players simply allow the Lich King to run past them before the encounter starts. The Lich King will continue forward, but the armies he raises will simply backtrack toward your group. You will have as much time as you need to kill the mobs. The time limit of Arthas approaching is really the important part of this encounter, so I imagine this makes the encounter really easy. Additionally, the mobs have different spawn and run speeds, so they are spread out even more and can be taken down nigh individually. However, most people agree that this is considered an exploit and players should not to attempt it. Unlike tanking behind the walls near the bosses, which was an intentional design decision, this is very clearly a bug. No Blizzard designer would intentionally make an encounter that becomes completely silly and pointless with strange player positioning. That being said, are you going to risk the warnings and try it since it is quickly becoming ubiquitous?