The Third Trade

This will be your greatest challenge. Go to the very end of the Excavation Site and annihilate the Skeleton Commanders. With them gone, the others will surely scatter.

This is it. Bring me 50 Horse Skulls, and you'll have your alliance.

Oh, you don't care about the planet? You aren't one of THEM, are you?

All right. You held up your end of the bargain. Just let me contact my superiors...

I need 50 of those Horse Skulls. They make charming, rustic decorations.