Necessary items: All Heart Tanks, Sub Tanks, Upgrade Capsules and boss weapons.Īs a reference to the Capcom series Street Fighter, a hidden upgrade capsule housing the Hadouken Fireball upgrade was placed into the game (complete with X actually yelling 'Hadouken!' in a high pitch voice).For example, Chameleon Sting's charged attack turns Mega Man invincible for several seconds. The special thing about this upgrade is that not only do you gain a third charge level for the Mega Buster, but you can also charge up your other weapons and unleash various abilities. In Sigma Stage 1, defeat Vile and Zero will give you the upgrade if you didn't already get it in Flame Mammoth's stage. The upgrade capsule is in a small room at the top of the wall if you didn't already receive the upgrade in Sigma Stage 1. Dash jump to the blocks and use the helmet and leg upgrades to break them and climb up the wall. Just before the first platform, breakable blocks can be seen near the ceiling. Near the beginning of Flame Mammoth's level, the stage will force you to go down to continue, followed by a large area with lava on the floor and platforms that the lava will break through (note: the lava will be frozen and can be walked on if Chill Penguin's stage has been cleared). Necessary items: Leg and Helmet upgrades (Flame Mammoth stage) or none (Sigma Stage).