Borderlands/Headstone Mine

Sledge: Battle For the Badlands
Sledge is a strong opponent specializing with short range bashing attacks.

Once you defeat Sledge, you will collect a quest item, an Eridian Artifact.

Schemin' That Sabotage

 * Rewards: $7689, Grenade

Plant 3 fueses, and destroy the pipeline.

The three fuese need to be places within a small area, all within a row and all covered by a single minigun turret. Once they are ready, head to the cliff above and power the generator to blast the pipeline to bits.

Weapon Chests

 * One within north-west shack in area covered by minigun turret
 * One within Sledge's Lair.