Who - Structural Engineer Dewas
Phrase - "I'll do it"

When your group is prepared, say "ready" to Dewas to be ported into Zhisza. Begin moving west from the zone in, invising as you can. You'll find the cracks as marked on the map below. Clear the area around each crack as you reach it, then move close to trigger a task update. When you do so 4 shissar spawn and attack, which must be killed. Once they are dead you get another task update (surviving the ambush), then click the crack with the device Deaws gave you. Invis up and make your way to the 2nd crack, and repeat the process. Finally move to the 3rd crack and kill that ambush as well. Once all 3 are found, repaired, and ambushes defeated you simply need to hail Dewas to complete the mission