History of Shaft 13

Overview

Shaft 13 is a Lost Sector in The Sludge on the European Dead Zone.

Location

The entrance is in a building on the far east side of the map, and the route runs through an abandoned factory.

Enemies and boss

The Lost Sector is defended by Fallen Dregs, Vandals and Marauders, some of which attack from the surrounding buildings. Watch for explosive barrels. The boss is Calzar, Scarred Captain, who engages from an upper platform; grenades or a Super can bring him down quickly.

Rewards

The page mentions a chest in the top left corner, reached by climbing up after the boss. It does not list specific loot.