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