The weaknesses are in the following order. X's Weapon / Zero's Weapon / Axl's Weapon

Crab Boss: X-Buster / Z-Saber / None

Burn Rooster: Drift Diamond / Hyouryuushou / Ice Gattling

Bamboo Pandamonium: Melt Creeper / Enkoujin / Flame Burner

Optic Sunflower: Green Spinner / Youdantotsu / Blast Launcher

Dark Mantis: Shining Ray / Tenshouha / Ray Gun

Gravity Antonion: Shadow Runner / Rasetsusen / Black Arrow

Earthrock Trilobyte: Squeeze Bomb / Juuhazan / Spiral Magnum

Gigabolt Man O War: Crystal Wall / Rekkyoudan / Bound Blaster

Avalanche Yeti: Thunder Dancer / Raikousen / Plasma Gun

Vile: Drift Diamond / Hyouryuushou / Ice Gattling

Vile on Jakob: Drift Diamond / Hyouryuushou / Ice Gattling

Sigma Copy: Shadow Runner / Rasetsusen / Black Arrow

Vile in Sigma Palace: Drift Diamond / Hyouryuushou / Ice Gattling

Sigma: Shining Ray / Tenshouha / Ray Gun

Lumine: [Depends on Situation]

Lumine's Final Form: Drift Diamond / Hyouryuushou / Ice Gattling