Ludibrium Party Quest

You need to be at Level 35-200 to do the party quest.

Head to Ludibrium: Eos Tower 101st Floor and form a party of 3-6 members.

Note: Post-Big Bang, any characters can do this PQ. Having a Cleric in your party is highly recommended for the boss fight. All-Cure potions are also highly recommended, as the battle with Alishar will occasionally leave your skills locked or your character being inflicted with the darkness effect.

Have your party leader click on Red Sign.