To defeat the Jump Guardian, you must treat him as a Warrior Ing with the power to jump higher and to generate shockwaves that may knock you out of the Light Field when it lands. It will make a Dark Aurora when it is about to jump, so you can be ready for the shockwaves it makes. Shoot the Jump Guardian with Charge Beam or missiles after it releases its shockwave, and make sure to jump at the correct moment so you are not hit. It is acceptable if you are hit by the shockwave a couple of times, as long as you get back to the Light Field as fast as possible. When the guardian dies, the Space Jump boots are yours. Additionally, the Jump Guardian can take a bit of damage. Use your Charge Beam or missiles to do more damage. The Jump Guardian is much like a Warrior Ing, but can jump and produce shockwaves when it lands. When the Jump Guardian shoots at you, hide behind the Light Crystal; he cannot hurt you there. When the Jump Guardian produces shockwaves, just jump over him. Follow this and you should have no problems defeating him.