You can get this mission from Moxxi just after acquiring the mission "The Man Who Would be Jack". Talk to her in her bar and she'll tell you about Jack's pet project. Make sure you get some payback for her.
- XP: 4563
- Money: N/A
- Gear: Grenade Mod
When you first get to Opportunity, Moxxi will send you to the construction site to find the foreman, Jasper. You'll likely bump into the Foreman pretty quickly. He looks like a normal engineer except that he's wearing some much heavier equipment. He has an armor bar instead of health so you're definitely going to want to use Corrosion on him.
Even though he looks like an engineer, he's got some interesting tricks. He has a turret on his back that he can use to shoot grenades at you, his physical attacks are a lot stronger, and he can shoot ion bolts to strip your shields. Thankfully, his projectiles are pretty easy to dodge. Even if he hits you with one of them, it's unlikely that he'll hit you with the next so your shields will have time to recover. Stay at range so he uses these attacks and then make sure to lay on him with the corrosion.
When he dies, he'll drop some loot, a lot of Eridium, and a special key. Take the key to the nearby waypoint to find a shipping crate. Open the crate and inside you will find a couple sets of explosives. Once you pick up one, you won't be able to pick up the other but there's no difference between the two. Take these explosives and work your way through the construction area to the large walls by the sea. Plant them and get away.
The explosives will go off and destroy the wall. It's time to get out of here. If you are doing Home Movies, you may want to activate that but when you are ready, return to Moxxi in Sanctuary for your reward.