Raiden V: Director's Cut (EP)

80,000,000 Points sounds a lot but fear not. In order to make this as easy as possible, start a new game in Practice mode and focus on shooting down everything in sight. It will also help to pickup the collectibles and collect lots of medals. Try not to get hit at all and save all your bombs. The more bombs you have left when finishing a stage the more points you will get. Since it's on practice it does not mean you can't die. Avoid of crashing into the enemies. While playing there will be a lot of medals flying around the screen and to make them come to you, simply stop shooting for a sec. Do this whenever you can.