15 0 4Actions Report Solution Basically a story-related achievement for Spartan Ops mode. Complete the following missions on any difficulty:-6-1: Escape Plan-6-2: All the Secrets-6-3: Need to Know-6-4: Search and Destroy-6-5: SwitchbackShowing all 4 comments. Leave a comment. And yet 2019, Achievement still bug, this is no unlock for me btw, pass every ch. Already.Posted by D2C KittyFluffy On 25 Aug 19 at 15:40 I didn't get this to pop either, I played them all on Legendary coop with me hosting the game. I have credit on all of the missions for Legendary coop, and still no achievement. 9/1/2020Posted by xXMalakian XVII On 02 Sep 20 at 02:55 Mine didn't unlock either. Luckily I'd read the comments here so was checking progress after each chapter. I noticed it didn't go up at all until finishing chapter 2, so after finishing them all I went back and re-did the 1st chapter and it unlocked.Posted by faultrd On 06 Mar at 14:58 I had problems unlocking most of the spartan ops achievements. Currently stuck at 98% for the full legendary solo completionPosted by Interracial On 10 Nov at 01:07 Leave a comment