Sometimes you have to kill a certain amount of enemies before the clock runs out, while many others give you devious mixtures of enemy types that demand a diverse use of your abilities. (darkstation.com)
You will fight as Beast Ganon, defeat a certain amount of enemies or restrict yourself by only attacking in certain ways. (nintendoworldreport.com)
The objectives mostly revolve around killing a certain amount of enemies. (gearnuke.com)