You are awarded a final score after finishing onimusha. If you have 30 points, you will receive S class, in which Kaede will have a new costume. 25-29 points will net you an A rating. For 18-24 points you will receive a B rating. 10-17 points will give you a C rating. And for 0-9 points you will receive a D rating. You are scored on how many demons you killed, how many souls you collected, how many pieces of fluorite you picked up and your play time.