Super Hydorah is an old-school shooter in almost every way imaginable. This means that it can be quite tough and unforgiving at times. If you find yourself struggling in the game, feel free to try out some of these tips to help you have a better time with it.
Don't be afraid of Easy Mode
Upon learning that Super Hydorah has an Easy Mode, you might reflexively avoid it and go with the game's Normal Mode, but this is most likely a mistake. Unless you are a seasoned shooter player or you've already been through Super Hydorah once, Easy Mode is the way to go.
Easy Mode grants you a rechargable shield, which can allow you to get further into levels more easily. You may not rack up quite as much score, but going through Super Hydorah on an easier difficulty can definitely help prepare you for subsequent runs on Normal Mode.