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