To beat Frost Tiger, you must use Joe for the entire battle. First, make Frost Tiger freeze one of the platforms. Go under the platform, then he will also come down. Use Mach Speed and punch one of the pillars that are under the platform until you catch Mach Speed Fire. Then, let Frost Tiger come to you (or vice versa) and punch him. His aura will go away and he will jump to the nearest pillar. If the pillar that he is on is unfrozen, he will freeze the platform. I you are in front of him, he will start attacking you. Use Slo Mo to see his skull, because his attacks are very fast. Keep dodging his Skull symbols until he starts spinning, then use Red Dragon Kick (Red Hot Kick and Zoom In). He will try to get his aura back. While he is getting that, use Red Dragon. Again. Keep doing this until he is defeated.