Send ghosts back to their graves with the shadow cannons.

Objectives

Using the shadow cannons, deliver the killing blow to ghosts in the Siren's Reef fractal.

Tiers

1. 0 : 8 objectives completed
2. 1 : 88 objectives completed
3. 2 : 168 objectives completed
4. 3 : 288 objectives completed
5. 4 : 368 objectives completed