Here is the full list of all 51 EARTH DEFENSE FORCE 4.1 The Shadow of New Despair achievements.
Destroyed 5000 flying drones.
Cleared all stages on Hard difficulty as a Wing Diver.
Destroyed 200 large transport ships.
Destroyed 900 Hectors.
Wing Diver's health has reached 550.
Defeated 120 shield bearers.
Defeated 12,000 spider-type bugs.
Defeated 24 death queens.
Defeated 200 Deroys.
Defeated 40 king spiders.
Defeated 24 queens.
Defeated 20,000 ant-type bugs.
Destroyed 2000 flying vehicles.
Defeated 2400 Dragons.
Destroyed 6 flying-type bug nests.
Defeated 4000 flying-type bugs.
Destroyed 200 underground tunnel exits.
Reached a height of 200 meters.
Ranger's health has reached 1000.
Obtained 10% of all available weapons.
Rescued 50 other players in co-op play.
Rescued 5 other players in co-op play.
Cleared all stages on Normal difficulty as a Ranger.
Cleared all stages on Hard difficulty as a Ranger.
Cleared all stages on Hardest difficulty as a Ranger.
Cleared all stages on Inferno difficulty as a Ranger.
Cleared all stages on Normal difficulty as a Wing Diver.
Cleared all stages on Hardest difficulty as a Wing Diver.
Cleared all stages on Inferno difficulty as a Wing Diver.
Cleared all stages on Normal difficulty as an Air Raider.
Cleared all stages on Hard difficulty as an Air Raider.
Cleared all stages on Hardest difficulty as an Air Raider.
Cleared all stages on Inferno difficulty as an Air Raider.
Cleared all stages on Normal difficulty as a Fencer.
Cleared all stages on Hard difficulty as a Fencer.
Cleared all stages on Hardest difficulty as a Fencer.
Cleared all stages on Inferno difficulty as a Fencer.
Obtained 50% of all available weapons.
Obtained all available weapons.
Destroyed 500 carriers.
Destroyed 12 quadruped fortresses.
Destroyed 150 red drones.
Destroyed 6 motherships.
Defeated 360 Retiarii.
Defeated 20 Greater Wild Dragons.
Destroyed 20 Argos.
Destroyed 30 Erginuses.
Destroyed 6 Brains.
Air Raider's health has reached 1000.
Fencer's health has reached 1250.
Healed another player in co-op play.