Question about MegamanX4

[Softy]

I cant even damage boss(after beating some bosses I falling down through
flor,having medikit and I dunno where weak point or which weapon use.
How to go up by megaman in air-boss stage in very spiked place?(What is there?)
I ended megaman8 and playing x4,x5,x6(they very hard to end!)

[montpics]

You may want to look for walkthrough which can be taken from GameFAQs. Good resource for anyone who is having problems beating the game and in need for tips.