The last one, MDK, stands for 'Murder Death Kill', which is a term coined in the 1993 movie Demolition Man.
He will only use this attack when the Vault Hunters are sufficiently close without any obstacles in between. He also has a very devastating charge attack which will do significant damage but can be easily dodged. Oney poses a substantial threat in close to mid-range combat with his shotgun, grenades and four suicide psychos but the bonus objective of assassinating him with a sniper rifle can help to maintain the fight at a comfortable range. The second target is Assassin Oney, a nomad with a rectangular metal physical shield worn on his back. Wot defends himself both by wearing a shield and by frequently hiding behind cover, and is health-resistant to shock damage. The psycho can be led away from Wot, and if he is led down into the pit, he will be trapped there and resort to throwing axes. The first target is Assassin Wot, a marauder. He appears in the company of a badass psycho. In some cases a door to the next assassin will be closed until the immediate one dies and drops an ECHO Recorder, only to automatically open when the recorder has been played. When approached, these barriers are removed and the assassins and their lackeys attack. Each of the assassins is marked by an objective waypoint, but concealed behind a closed door until approached.
Once the mission is accepted, the next stop is in Southpaw Steam & Power.