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Halo 4: Complete all chapters in Spartan Ops Episode 9.

Key0
1 guideOnline/OfflineSingle PlayerCooperative
CyberPunch83CyberPunch83423,270 423,270 GamerScore
17 May 2018
4 1 0
Basically a story-related achievement for the Spartan Ops mode. Complete the following missions on any difficulty to unlock this achievement:

-9-1: The Search for Halsey
-9-2: Clean Up
-9-3: Science Mountain
-9-4: Revenge
-9-5: The Hammer