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