Once the cat is defeated you will need to defeat the samurai. To defeat the samurai stay at the lower left hand corner of the screen When he rolls. When he stops rolling move towards him and hit him with your staff or coins. Periodically you will to come out of the lower left hand corner to ensure that the samurai stops rolling. Repeat the procedure of hiding in the lower left hand corner of the screen and then attacking when he stops rolling until he is defeated. Once he is defeated the princess will be safe.