X8 Weakness Order

While neither route focuses on weaknesses, it's valuable to know the weaknesses as a backup. 
 Most Mavericks are stunned for prolong periods by their weakness, making it a valuable backup strat when using X if Zero is unavailable. 
 Weakness Loop 
 
 Gigabolt (get Lightning) 
 Yeti (get Ice) 
 Rooster (get Fire) 
 Panda (get missiles) 
 Sunflower (get light) 
 Mantis (get shadow) 
 Gravity (get black hole) 
 Trilobyte (Get pillar) 
 
 Castle Bosses 
 Vile is always weak against Ice (in all appearances including atop the Jacob elevator) 
 Sigma 1 (in the refight stage) is weak to Mantis's weapon 
 Sigma 2 (the demon on the moon) is weak to Sunflower's weapon 
 Lumine 1 is weak to the weakness of the maverick whose attack he is using. The exception is Rooster and Yeti, he is not vulnerable at all in these attacks. 
 Not sure on Lumine 2