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