Find Fred's basement workshop

Become inedible.

Defeat the Weatherhead Prime without taking damage

Collect half of the Sumo Slammer cards

Hit 10 enemies with a single use of Diamondhead's ability

Dodge Weatherhead lightning, then hit the attacking enemy by using Upgrade’s ability

Defeat a Pie Juggler before their pie hits the ground with XLR8’s ability

Defeat an enemy as each of the 10 aliens in one fight

Hit 5 enemies with a single rolling Tweedledee

Defeat Zombozo without taking damage

Finish the game

Completely upgrade all aliens

Defeat 2 enemies with a Weatherhead Drone