The Grey Goop Add-on for Kaiju-A-GoGo has 6 achievements.
Maleficarum's plans to rule the world have come to fruition! Now, can you do it on a harder setting?
Maleficarum's plans to rule the world have come to fruition!
Malady Maleficarum is not to be messed with! Her plans to rule the world have come to fruition!
Geez! Maleficarum's plans to rule the world have come to fruition... with extreme prejudice!
Maleficarum has forced Djibouti to surrender. Feels good, right?
Collect 10,000 Goop Pickups.