How do I find and defeat more of the Mutant Moose? I have defeated all other "Monsters" in the Howling Peaks part but have 2/10 left to find and defeat. I can only find the one in the Town Center and I cannot seem to defeat him with the provided snowballs in the building. I can't find any other snowballs to throw at him either. Help! I want to beat this with my 5 year old and it's driving me nuts that we've come this far and can't find more of the Mutant Moose!