Observatory

Access and exit
The Observatory can only be accessed from the Astrolab, which can only be entered from the Throne Room through the 5 BSC door.

Enemy tier and gear level scaling
In the table below, you will find the gear level and enemy tier of the Observatory based on difficulty. Even though the Observatory can only be accessed on Hell difficulty there are enemy tiers set for lower difficulties.

Exclusive blueprints
Beating the Collector will award the following blueprint:
 * 1st kill - skill

Collector Outfit and King Outfits
Beating the Collector will also reward the player with his outfit and the King's outfits. There are 2 King outfits, one is for defeating the Collector while possessing the King, the other is for finishing the fight without taking damage.
 * 2nd kill:
 * 1st kill while possessing the King:
 * 1st flawless kill:

The Collector
See the main article for information about the Collector.