This is one of the four Dungeons that becomes available at level 60 and one of the first ones you want to complete out of the four, save Sabex Armory dungeon for last unless you meet the requirement. It has a Minimum Item Level Requirement of 242 to enter. Once you hit level 60 best advice is to do "The Vanguard Initiative" quest line. It is about 7 quest long and it will give you full level 60 Initia armor and accessories and good xp and gold. Once you are equipped with the all the level 60 Initia gear I recommend Enchanting all gear pieces to +9. During the quest line you should start to receive Ishara’s Relic Pieces (level 60 relic weapon) these are obtained by killing monsters in Velika Outskirts and the zone "Vanguard Requests" quest when you’re level 60. I recommend enchanting to +9.