So here are, mission by missions, the things that you have to do in order to get the best ending in CoD: Black Ops 2 (NOTE: MAJOR spoilers ahead!):
- In the Pyrrhic Victory mission, rescue Woods
- In the Celerium mission, recover the device
- In the Old Wounds mission, successfully interrogate Kravchenko (learn about CIA mole)
- In the Time and Fate mission, find all the intel to learn about the CIA mole
- In the Fallen Angel mission, find out about Zhao’s secret meeting
- Make sure to successfully protect Harper
- In the Karma mission, save Karma and kill DeFalco
- In the Suffer With Me mission, Woods is not successfully manipulated by Menendez
- You will have to complete all the Strikeforce missions
- In Achilles’ Veil – make sure that Farid survives (you will have to kill Harper)
- Make sure that the SDC allies with the US Military
- In Odysseus, Admiral Briggs survives and activates USS Obama’s defenses until reinforcements arrive & Karma and crew of USS Obama survives the attack (you will have to shoot Briggs)
- In Cordis Die, make sure that the president is saved
- In Judgment Day, Menendez is captured
These are all the requirements to make sure you get the absolute best ending in Call of Duty: Black Ops 2 and I am sure that you will do your best to get this ending as it is the most rewarding!