I still remember fighting the queen. im not saying this is the best way, but it works. best if you use only melee. you can use ranged but its a hassle to switch to korasis in time and spec her. when next to the queen, pray melee constantly. when at least 1 square away (out of mele range) pray mage. the defilers she summons should not be killed, they should be made aggressive (DO NOT KILL THEM!) to you as fast as possible, and if possible, have the queen in between you and them. this is not always possible though. remember, the entire fight is endurance. you dont need to be an epic fighter, you just need not to die.