Billows unlocked it last night!
My opinions on the map is that its really well made but possibly a little too big. There is stuff to do in there as I'm told by some friends. Shura is just filled with morons who claim there is nothing in there.
Tips: Be careful which portals you take out of the main entrance. I've taken a couple and been hit by NPCs that hit for 44k per hit.
Be careful which mobs you attack. I've been able to kill some of them successfully and failed to kill others. Damage of mobs has ranged from 400 to 264,000 on me.
You have to run through crap that does this damage to you:
Takes over 30 minutes to get from one end of the map to another.