Here is the full list of all 50 Vanquish achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Complete all of the Tactical Challenges in VANQUISH.
Destroy the Buzzard without allowing it to reach ground level in Act 5-1.
Destroy two cannons in Act 3-3 and complete the mission.
Find and fire upon all of the Pangloss statues hidden on the colony.
Destroy four enemies simultaneously with the Lock-on Laser.
Destroy all the floating turrets in Act 3-4.
Proceed on the monorail in Act 3-4 without being spotted by the enemy troops or searchlights.
Defend the Pangloss statue in Act 3-2.
Destroy two Romanovs in a row using only melee attacks.
Complete the game without dying, regardless of difficulty level.
Destroy the arms, head, and back of an KNRB-0 Argus robot.
Destroy 10 enemies distracted by cigarettes during one mission.
Destroy two Argus robots in Act 2-3 while they are in bipedal mode.
Destroy a Chicane with a hand grenade.
Destroy a Romanov's arms and legs, then finish it with a melee attack.
Destroy 100 enemy robots with melee attacks.
Destroy two enemy robots who have been distracted by a cigarette.
Destroy two or more enemy robots at once with the LFE gun.
Destroy three enemy robots at once with rocket launcher splash damage.
Complete all Acts.
Complete all Acts on Hard difficulty or above.
Complete Act 5.
Complete Act 5 on Hard difficulty or above.
Complete Act 4.
Complete Act 4 on Hard difficulty or above.
Scan and acquire all weapons.
Ignore the elevator start order in Act 4-1. Instead, hold position and destroy all reinforcements.
Complete Act 3.
Complete Act 3 on Hard difficulty or above.
Destroy five or more enemy transports from atop the Kreon in Act 3-7.
Do not allow any friendly armor to be destroyed during Act 3-5.
Complete Act 2.
Complete Act 2 on Hard difficulty or above.
Revive 20 friendly troops.
Level a weapon up to maximum operational capability.
After taking control of the enemy transport in Act 2-2, do not let a single enemy escape.
Maintain a Boost dash to the limit of the ARS reactor without overheating.
Destroy ten incoming missiles or grenades.
Complete Act 1.
Complete Act 1 on Hard difficulty or above.
Destroy ten enemy robots that have been disabled with an EMP emitter.
Destroy ten enemy robots with melee attacks.
Destroy a Romanov with a melee attack.
Manually trigger AR Mode and destroy three enemy robots in a row.
Destroy three enemy robots at once with one hand grenade.
Destroy an incoming missile or grenade.
Destroy three enemy robots while in damage-triggered AR Mode.
Revive a friendly troop.
Manually trigger AR Mode and destroy an enemy robot.
Complete all DARPA training exercises.