Here is the full list of all 35 Call of Duty: Black Ops II achievements. It takes around 30-35 hours to unlock all of the achievements on Windows.
A duel between rivals.
Jailor or executioner.
Escort the president to the secure location in downtown LA.
Reinforcements on the way.
Crack the celerium worm.
Capture Menendez.
There are two futures.
Listen and think before you shoot.
Find the Karma weapon.
Gather information on Raul Menendez' suspected terrorist plot.
Plastic surgery avoided.
Take down Menendez and his operation.
Gather intel on Raul Menendez from Mullah Rahmaan.
Investigate the jungle facility.
Interrogate Menendez.
Stop the brutality inflicted by the PDF.
Only one can survive.
Successfully rescue HVI.
Successfully assassinate SDC Chairman Tian Zhao.
Successfully defend FOB Spectre from incursion.
Successfully escort the VIPs to safety.
Successfully neutralize the SDC freighter at Keppel Terminal.
Stop Menendez once and for all.
Complete all future levels in veteran.
Capture Manuel Noriega and bring him to justice.
Complete "Pyrrhic Victory", "Old Wounds", "Time And Fate", and "Suffer With Me" in Veteran.
Use a future weapon in the past.
Complete a level with customized loadout.
Complete all challenges in Black Ops II.
Rescue Woods.
Complete all challenges in a level.
Complete 1 challenge in any level.
Complete the campaign on Hardened or Veteran difficulty.
Collect all intel.
Minimum score of 10k in every mission.