The Elder Scrolls IV: Oblivion Unlockables
Brotherhood Invitation
If you want to join the Dark Brotherhood, you must kill somebody for no reason other than killing them, and then there will be text in the top left hand corner that says, "Your killing has been observed by forces unknown..." To do this easily, find a hobo and wait until night time. You can find them behind houses or by trees in the town, and when they go to sleep go into sneak mode and attack from behind. Since they have no armor it will be easy to kill them. But to make sure you kill them, poison your blade and use a power attack.
Submitted By: Jon Lucas
Skeleton Key
At the shrine of Nocturnal, located along the road east of Leyawiin, if you make the proper offering the Daedric goddess will talk to you. She will ask you to find and return the Eye of Nocturnal. If you go to Leyawiin and ask around you will be led to two exterminators, Weebam-Na and Bejeen. Listen in on their conversations and they will say that they fear the trolls will mess with their new "treasure" at Tide Water Cave. Go to the cave and at the end of an underwater tunnel you will find the Eye of Nocturnal. Return to the Nocturnal Shrine, and talk to the goddess. She will then give you the Skeleton Key, an unbreakable lock pick. The pick also gives you a 40 point boost to your security.
Submitted By: oblivionplayerkev