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