Read 10 notes (Campaign only).

Join the Golden Path (Campaign only).

Discover some of the Wraith's past.

Unlock 3 Sword Rune slots.

Successfully complete a Survivalist Challenge.

Complete a Dagger Mission and begin growing the legend of Acharn.

Complete the campaign on any difficulty.

Complete "Throttle."

Complete "Armada."

Complete "Bio Lab."

Complete "Sentinel."

Stop an AST with an EMP grenade.