Here is the full list of all 50 Earth Defense Force: Insect Armageddon achievements.
Purchase all weapons for all armors
Collect All Dropped Weapons
Destroy 10000 Gunships
Survive 500 (total) waves in Survival mode
Kill 10000 Spiders
Level up all armors completely
Destroy 100 Carriers
Purchase all available weapons for a single armor
Revive 250 teammates
Kill 5000 Ticks
Kill 100 Wasps
Get 10000 kills in Survival mode
Kill 25000 Enemies
Beat the game on Inferno
Level up an armor completely
Destroy 100 Anthills/Spider Nests
Beat the game on Hard
Kill 10000 Ants
Kill 100 Small Hectors
Get 250 kills with the Lander Turret
Destroy 1000 Gunships
Survive 100 (total) waves in Survival mode.
Kill 10 Mantises
Kill 10 Bomber Spiders
Destroy 10 Carriers
Get 500 kills with the Mech
Kill 10 Wasps
Get 500 kills with the Tank
Kill 5000 enemies
Make it through 5 Survival Mode Waves in One Session
Destroy 500 buildings
Get 1000 kills in Survival mode
Beat the game on Normal
Destroy 100 Gunships
Destroy 500 cars/vehicles
Get 500 kills with Base Turrets
Kill a Queen Ant
Kill 10 Small Hectors
Kill 100 Ticks
Kill 1000 Ants
Kill a Large Hector
Kill a Mantis
Kill 100 Spiders
Kill a Daddy Long Legs
Destroy 500 world objects
Destroy 10 Anthills/Spider Nests
Unlock all armors
Revive a teammate
Incapacitate a teammate
Kill 100 Ants