Megaman X8 is not and FPS game.I don't really know what it's called.
Megaman have 8 series.You have to get through all stage to fight on "Sigma".
Megaman X8 is a 2D game.Try to get all secret armor location to get more powerful armor.
These game game got 3 level.Easy,normal and hard.
Also,try to get Ultimate X,Black Zero and White Axl with collect all chips on secret location.
I've made a video for this but without download link.
CLICK HERE for Megaman X8 video.