The Elder Scrolls 4 - Oblivion - The Shivering Isl - Platform: Xbox 360

Achievements:
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Complete each of the following achievements below to get the allotted gamerscore.
Tourist, Shivering Isles (20) Enter the Shivering Isles.
Aspirant, Shivering Isles (20) Reach Aspirant Rank in the Court of Madness.
Citizen, Shivering Isles (20) Reach Citizen Rank in the Court of Madness.
Madman, Shivering Isles (20) Reach Madman Rank in the Court of Madness.
Honored Madman, Shivering Isles (20) Reach Honored Madman Rank in the Court of Madness.
Duke Dementia, Shivering Isles (30) Reach Duke of Dementia Rank in the Court of Madness.
Duke Mania, Shivering Isles (30) Reach Duke of Mania Rank in the Court of Madness.
Regent, Shivering Isles (20) Reach Regent Rank in the Court of Madness.
Defender, Shivering Isles (20) Reach Defender of the Realm Rank in the Court of Madness.
Madgod, Shivering Isles (50) Stop the Greymarch.

Duplicating Items after downloading Shivering Isles
This glitch allows you to duplicate items by using scrolls:

Step 1: Go to your inventory.
Step 2: Equip any scroll that you have multiple copies of (ex. 5 "Superior Convalescence").
Step 3: Once the scrolls have been equipped, press A again while still in the inventory.
Step 4: Drop the item you wish to duplicate (ex. Grand Soul Gem) - you must have less items 
than scrolls or it doesn't work.

You will now have the same number of items(ex. Grand Soul Gems) as you have scrolls!

Walk outside Crucibles walls (to ANYWHERE on map)
Create a fortify acrobatics spell with magnitude 100 for 2 seconds (you only have to have 
25 restoration.)
Fast travel to crucible. Walk straight through the town to the door to Bliss. Turn right 
and walk up the stairs to where the Dark Seducer is standing. Cast the spell and jump 
over to the rooftop to your right. Then again the the roof West of you. Hop up to where 
the stool is and then jump on the chimney thingy infront of you. Jump onto the roof 
infront of you and you are now free to walk wherever you want around the shivering 
isles without any buildings, creatures, or basic graphic design in your way. 
Try walking back to the portal and then into the Emean Sea until you can't go further 
then look at the island, nice view eh? When you get tired of it just fast travel anywhere. 
(This was aimed at 360 owners who don't have the abilities to manipulate the game as computers do.)