Boss Key




 * While "Journeying to the Asura Gate" a key-like symbol appears in the mini-map in the South end, after acquiring the scroll at the symbol near the North entrance.


 * A squad of mobs in a neat 2x3 arrangement is found near that symbol. After the enemies are dispatched there is a drop named "Boss Key". It does not go into your Inventory like other drops, but displays as on-screen text and symbol.
 * At the 'door' symbol further South there is a "Boss Lock" on the ground. Allies and enemies near the door can do melee and AoE damage through the door even before it is opened. Ranged damage seems to be blocked.
 * After the door is opened the "Boss Key" notice remains on-screen.