Here is the full list of all 57 It came from space, and ate our brains achievements.
Finish with the highest score in a multiplayer game 10 times.
Finish block launchpad on any difficulty.
Finish block scrapyard on any difficulty.
Finish block suburbs on any difficulty.
Finish block industrial on any difficulty.
Finish block navy on any difficulty.
Buy all laser upgrades.
Shoot 95471 times.
Died 123 times.
Reach 75x multiplier.
Pick up 100 upgrades dropped by the S.W.A.T. Drone.
Finish block crash site on any difficulty.
Buy all rocketlauncher upgrades.
Buy all shotgun upgrades.
Kill 10000 aliens.
Finish block countryside on any difficulty.
Kill 7 aliens at once.
Use the shield 5 times.
Place 5 turrets.
Buy all pistol upgrades.
Place 15 mines.
Finish block highway on any difficulty.
Reach 50x multiplier.
Use the searchlights 5 times.
Buy all plasmagun upgrades.
Buy all machinegun upgrades.
Finish block city on any difficulty.
Finish block hospital on any difficulty.
Finish with the highest score in a multiplayer game.
Kill 1338 crawlers.
Kill 1000 aliens.
Reach 25x multiplier.
Staying alive while other players are waiting to respawn.
Kill an enemy close to a player with one health.
Die for the first time.
Finish block planet on any difficulty.
Finish the first six levels on easy.
Finish the first six levels on medium.
Finish the first six levels on hard.
Finish the first six levels on insane.
Kill 100000 aliens.
Make 25.000.000 amount of Coins in total.
Finish 1 multiplayer game on insane without dying.
Finish 3 multiplayer games on insane without dying.
Finish 6 multiplayer games on insane without dying.
Finish block ship on any difficulty.
Revive 5 people using medkits.
Complete all Campaign levels on Easy
Complete all Campaign levels on Medium
Complete all Campaign levels on Hard
Complete all Campaign levels on Insane
Complete Rooftops (Campaign) on any difficulty
Complete Clinic (Campaign) on any difficulty
Complete Alleys (Campaign) on any difficulty
Complete Sewers (Campaign) on any difficulty
Complete Riverside (Campaign) on any difficulty
Complete Cave (Campaign) on any difficulty