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