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