Arthas will be killed, be looted, reset in a week, be kileld, be looted...
and when Tyrannus goes there and equips the helmet he says: Power... Overwhelming! After a moment he says: Rimefang, destroy this raid!
After the lich king dies what do you think will happen to Arthas and Nerzhul? Will arthas be redeemed or killed?
yes because a god like undead lich being killed by 20 people behind their computers over and over again is official lore...
Uther said:Uther the Lightbringer says: There is... something else that you should know about the Lich King. Control over the Scourge must never be lost. Even if you were to strike down the Lich King, another would have to take his place. For without the control of its master, the Scourge would run rampant across the world - destroying all living things.
[...]
Uther the Lightbringer says: I do not know, Jaina. I suspect that the piece of Arthas that might be left inside the Lich King is all that holds the Scourge from annihilating Azeroth.
Bolvar is being suspicious with his whole "NO ME" speech.
But Nerzhul is still part of the Lich King...
Uhhh... Did you play Warcraft 3's campaigns at all? Arthas went evil of his own will. He became the Lich King of his OWN will when he put on that helmet in the end of Frozen Throne. Like the poster said above, he is beyond redemption. He willingly chose to throw his own soul for power.