In Pursuit of Gul'dan

All Hands on Deck and The Invasion of Tanaan are the introductory part of the 6.2 Garrison Campaign questline and both can be completed on the same day.

After a simple relog, one of the following quest is also provided randomly in your Tanaan faction outpost:

Bane of the Bleeding Hollow
Dark Ascension
The Fate of Teron'gor

Next week you will have another one from these quests available and after another week, the 3rd one will be provided aswell. All 3 quests appear in your Tanaan Outpost from week to week in a random order.

On the next week, after you completed the first 5 parts listed above, The Cipher of Damnation, the final part will be offered and you can complete this achievement.

Still 3 weeks now and have not been offered any of these 3 Bane of the Bleeding Hollow Dark Ascension The Fate of Teron'gor and i have done everything possible on tanaan jungle. Reps, Achievements, rares, Treasures i mean everything. Just waiting on these last 3 campaigns to have every single thing done on the island.

I've had the first 2.. but now i'm still missing the fate of teron'gor and it's been 2.5 weeks since my last mission...