How do you beat primary

This answer gets you to earn the awards, "Primary Objective" (beat the game) and "Jacksmacked" (beat the final Void Overlord without dying during the fight).

Kill the final Void Overlord withoud dying during he fight. If you die, go to level select and click the last button, "Floor 30: Return of the Hueman" and try again. Don't give up when you keep dying.