|X's mission||Zero's mission||Extreme mode|
- In Zero's Mission, the Head Crush and Leg Crush are useless.
- In Extreme Mode, X's Arms upgr. can be obtained without getting X's Head upgr.; this way, X can keep using four parts instead of two.
- In Extreme Mode, X's Head upgr. is only necessary to obtain the Hadouken and Shouryuken.