It came from space, and ate our brains achievements

Finish block navy on any difficulty.

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

Use the searchlights 5 times.

Reach 50x multiplier.

Buy all plasmagun upgrades.

Place 15 mines.

Finish with the highest score in a multiplayer game.

Finish block highway on any difficulty.

Place 5 turrets.

Use the shield 5 times.

Buy all laser upgrades.

Buy all shotgun upgrades.