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