Here is the full list of all 57 It came from space, and ate our brains achievements.
Died 123 times.
Finish block highway on any difficulty.
Buy all rocketlauncher upgrades.
Finish block suburbs on any difficulty.
Finish block industrial on any difficulty.
Buy all machinegun upgrades.
Buy all shotgun upgrades.
Finish block navy on any difficulty.
Kill 7 aliens at once.
Buy all plasmagun upgrades.
Kill an enemy close to a player with one health.
Pick up 100 upgrades dropped by the S.W.A.T. Drone.
Finish block planet on any difficulty.
Buy all laser upgrades.
Revive 5 people using medkits.
Use the searchlights 5 times.
Finish block city on any difficulty.
Kill 1338 crawlers.
Place 15 mines.
Use the shield 5 times.
Place 5 turrets.
Kill 1000 aliens.
Finish block hospital on any difficulty.
Reach 25x multiplier.
Buy all pistol upgrades.
Staying alive while other players are waiting to respawn.
Die for the first time.
Finish block countryside on any difficulty.
Finish block crash site 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.
Reach 50x multiplier.
Reach 75x multiplier.
Kill 10000 aliens.
Kill 100000 aliens.
Shoot 95471 times.
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 with the highest score in a multiplayer game.
Finish with the highest score in a multiplayer game 10 times.
Finish block scrapyard on any difficulty.
Finish block launchpad on any difficulty.
Finish block ship on any difficulty.
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