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