Halls of Eternal Frost - Bossfight explained
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This is how to kill the (pretty tough) enboss of the Halls of Eternal Frost (Ice Ruins):
Up until the Acheron Endboss the instance is really easy. But the Boss and its minions are really tough.
One Player needs to collect the sand from the desk. make sure it is not the healer and not the (main) tank.
Clear the room around the boss. now. the player with the sand can trigger the fight by talking to the boss. he ist going to spawn minions. the player with the sand will always have initial aggro. he now runs out of the room and throug the corridor. he/she takes the corridor, that leads back to the bossroom at the other side. the player with the sand is able to run in circles and drag the minions after him.
the tank shoots the boss after the pull and drags him to the rear end of the room, where he is killed by the group.
This way the sandbearer can pass throu the bossroom without loosing the minions.
when the boss is dead, the minions will disappear, so no need to kill them. they do massive damage and have a lot of hp.
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make sure that you are out of combat before the first pull, and make sure the first person who klickes the boss has the sand. otherwise the event will be broken and you have to contact a GM...