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