Fuiginmon (Digimon of Speed) is only weak to Fight attacks. If you have a Gallantmon or Cannondramon, he will go down quickly. Next is Suiginmon (Digimon of Power). He is weak to water and ice attacks. His Fight attack hits you four times -- have some Ultracharges ready. Last is Rajinmon (Digimon of Thunder). He is fairly easy if your Digimon are trained well. Water and ice attacks work on him. After all of them are defeated, prepare to take on Galacticmon.