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