Just You and Mathias

Find Master Mathias Shaw at the Twilight Citadel in the Twilight Highlands.

The SI:7 are all dead. Time to find Master Mathias Shaw.

Good thing the squad commander told you where he would be.

Where are the rest of my people?

Keep heading up the ramp, then circle around to the left and south to find Shaw, stealthed at the base of a guard tower.

His gossip text:

• There's an artifact, a weapon, being forged with the power of an Old God. We don't know exactly what it is, but we need to get to it before it's completed by Cho'gall.
• Everything else is secondary. Everyone is expendable, including you and I.