|3||321 XP, $12, Shield|
After finishing the previous mission, go to the waypoint and press the button that shows to travel to Southern Shelf. Try not to shoot Claptrap as you continue along the path, eventually happening upon some Bullymongs outside of the gate to Liar's Berg. Take care of the frozen gorillas and wait until the gate is opened, noting that there are some bandits on the other side waiting to fill you with lead.
Note that you can shoot some of the bandits through the gaps in the gate if you want. These are nothing more than Marauders, who will most likely stay away from you and shoot with their guns. After clearing some, your favorite gorillas will show up and join the party. It's important to know that the bandits and Bullymongs aren't particularly fond of each other, as you can see from them fighting against one another, so you can either hang back and let them go at it, or simply hog all of the fun to add to your much needed XP.
Once you're finished saving whatever this dump of a town is, wait for Claptrap to get shocked and you'll be introduced to Sir Hammerlock, a scholarly gentleman (who hates the sound of Claptrap's voice). Hand him Claptrap's eye and he'll repair him back to normal, or whatever Claptrap is. Follow Hammerlock to have him turn on the power to the town, then talk to him to finish the mission.
Note: You may have noticed that Hammerlock has a yellow exclamation mark above his head. This signifies that he has an optional mission that he can give you. As the name suggests, they are completely optional, but they reward you with more XP and sometimes, very nice equipment.