From Destinypedia, the Destiny wiki
While on patrol in the Cosmodrome, Agadir and his fireteam chased a Fallen Vandal into the fabled loot cave, going deeper within than any other Guardian before. They pressed on in the hopes of finding the source of all the loot that had been gathered from the cave. On the fourth day of their expedition they had yet to find any treasure. Agadir and Pershing were approached by Wilhelm-7's Ghost Bismarck while the Exo was supposedly sleeping. The Ghost confided in them that he believed his Guardian was lost and proposed they turn back.
Despite Bismarck's warning, the three Guardians pressed on and did begin to discover a massive hoard of loot that filled numerous caverns beneath the Cosmodrome. By day ten inside the cave, the mental state of the fireteam began to deteriorate as they argued over who would get what Engrams and loot as part of their cut. During a dispute over a mid-tier Pulse Rifle that Pershing already owned, the Titan shot Agadir dead. His Ghost manifested and shouted at Pershing but was nearly shot as well before Wilhelm intervened. Four days later Agadir took his revenge by drawing his Golden Gun unexpectedly on Pershing and killing the Titan's Ghost and then him.
Wilhelm soon turned upon Agadir and killed his Ghost as well, severely weakening the Hunter. He was forced by Wilhelm to haul a cart full of the loot that the Exo had gathered, although the strain of doing so was almost killing him as they progressed deeper into the cave. On the twenty-second day within the cave Agadir attempted to steal some of the loot from the sled but was caught by Wilhelm. The crazed Lightbearer tossed Agadir down a sinkhole as punishment before dropping a grenade in with him, permanently killing the Lightless Hunter.
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