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