Attack from behind
From Create Your Own Story
You go in Crazy Grandpa's house silently. You hear him coming. You hide behind a corner. Crazy Grandpa walks past you. Super Granny follows him and jumps on him. You knock him out. He falls on the floor and a key falls out of his pocket. You take the key and open all the cages were he put your cats and kittens. You win.
The End