To get the best endings, you must accomplish all of these tasks during the story missions.
Pyrrhic Victory - Mason rescues Woods
Celerium - Celerium Worm recovered
Old Wounds - Kravchenko interrogated - learned about a potential mole in the CIA
Time and Fate - Compound searched - learned about a potential mole in the CIA
Fallen Angel - Zhao secret meeting details discovered
Harper successfully protected
Karma - Karma secured, DeFalco dead
Suffer With Me - Menendez fails in completely manipulating Woods
Achilles' Veil – The CIA undercover operative Farid survives
Strategic Defense Coalition allies with the US military - Strike Force complete
Obysseus - Admiral Briggs survives and re-activates the USS Obama's defenses
SDC sends hundreds of drones to protect the USS Obama
The Obama's defenses hold long enough for SDC reinforcements to arrive - the Obama was saved!
Karma and the crew of the USS Obama survive Menendez’s attack!
Cordis Die - President Bosworth is saved
Judgement Day - Menendez captured