Beat the 1st maze.
Beat the 4th maze.
Beat the 7th maze.
Beat the 10th maze.
Clear the 5th maze 5 on Skill 4 without losing a life.
Transform into a dog.
Escape the center of the maze using the IN gate.
Earn an extra mouse by earning 40k points.
Collect the Big Cheese bonus item.
Collect the Ring bonus item.
Collect the Scissors bonus item (Maze 4+).
Collect the Paper Clip bonus item (Maze 7+).
Collect the Diamond bonus item (Maze 10+).
Hold 5 dog bones in your inventory.
Clear a stage without swapping any doors or dying after collecting some cheese.
Capture 4 cats on a single bone.
Capture 6 cats on a single bone (Skill 3+).
Capture 10 cats without reverting back to a mouse.
Earn a score of 50k.
Earn of score of 100k.
Earn a score of 250k.