It came from space, and ate our brains achievements

Pick up 100 upgrades dropped by the S.W.A.T. Drone.

Finish a multiplayer level and win it.

Reach 50x multiplier.

Use the searchlights 5 times.

Finish block highway on any difficulty.

Finish with the highest score in a multiplayer game.

Buy all plasmagun upgrades.

Place 15 mines.

Place 5 turrets.

Use the shield 5 times.

Buy all laser upgrades.

Buy all shotgun upgrades.