Mega Man X Meets Street Fighter
If you think you have mastered Mega Man X after beating all the bosses then you might want to try going after this little Easter egg. Once you get all the heart tanks, all the sub tanks, and all the weapons, head back to the armadillo stage. Take a short ride on the platform where you will have the dash jump onto a ledge at the end of the ride. You must have full health, so get the full health that is there then jump into the pit and die.
If you do this correctly three times, then on the fourth time you will see a upgrade capsule where a hologram of Dr. Light dressed as Ryu will give you the Hadouken upgrade. You have to be at full health in order to use it but that handicap is worth it once you try out the famous fireball move from Street Fighter.
