Reload the area, go to the back of the cave, and kill the to free Dusk of Oolacile.

Modified consoles often need a "nudge" to recognize DLC as licensed. Launch from your Applications menu. Select Check DLC .

DLC on the Xbox 360 must follow a very specific directory structure. If one folder is misnamed, the game won't see the content. Hdd1\Content\0000000000000000\4E4D083A\00000002\ 4E4D083A : This is the Title ID for Dark Souls .