Tip on getting the combo awards. In options, set spawn size to 20. Now, select single nest, then, right click, from the mini menu: click forward. now it looks messed up. You're doing it right. now, click huge nest and a LOT of Glooples will show up. Best combo I can get is 6.
Tip on acquiring the Void Eater: Select practice mode and choose the "Gray" and the "Gloople". Try not to splat any of them. Eventually the two will form together and you will die. ( Because you don't know how to fight one).