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 "Pyrrhic Victory", "Old Wounds", "Time And Fate", and "Suffer With Me" in Veteran.
Use a future weapon in the past.
Only one can survive.
Minimum score of 10k in every mission.
Successfully rescue HVI.
Successfully defend FOB Spectre from incursion.
Successfully escort the VIPs to safety.
Successfully neutralize the SDC freighter at Keppel Terminal.
Successfully assassinate SDC Chairman Tian Zhao.
Stop Menendez once and for all.
Jailor or executioner.
Escort the president to the secure location in downtown LA.
Interrogate Menendez.
Capture Menendez.
Capture Manuel Noriega and bring him to justice.
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.
Complete 1 challenge in any level.
Rescue Woods.
Complete a level with customized loadout.
Complete all future levels in veteran.
Complete all challenges in Black Ops II.
Complete all challenges in a level.
Complete the campaign on Hardened or Veteran difficulty.
A duel between rivals.
Reinforcements on the way.
Crack the celerium worm.
Collect all intel.
Stop the brutality inflicted by the PDF.