Mega Man Xtreme/Magna Centipede

Heart


After the area with the yellow alarm lights, dash-jump from a step before the save point to the security system on the left. Climb the wall to get to a hidden room with the Heart.

In Easy & Extreme Modes this item is easier to access: use the charge the Speed Burner to extend the dash-jump.

Sub-Tank


This item is located in a room above the ceiling, just before the next save point. You can reach the ledge with a normal jump, then climb up to the Sub-Tank.

In Easy & Extreme Modes you can use the Speed Burner, but it's more difficult and more dangerous than a normal jump.

Mini-boss


The mini-boss can be defeated with eleven hits from the Rolling Shield, but he's immune to the Silk Shot.

In Easy Mode, it can be dispatched with just six Hadouken.

Leg Upgrade / Zero Final
You'll get to a room where blocks fall from the ceiling. Climb to the top of a pillar in the middle of the room. Up there, you can use the Head Upgrade to crush some blocks and access to Dr. Light's capsule. He'll give you the Leg Upgrade. In Easy & Extreme Modes, you'll get the Zero Scramble: Final, instead.


 * "Install the program Zero Scramble Final! This will allow you to call a Special A level Hunter, Zero... This is the most powerful weapon and will destroy almost any enemy. Keep in mind that this requires a huge amount of energy... Use this on strong enemies that may seem impossible to defeat!"

After the room, there is a rematch with the mini-boss. Be careful: its attacks are stronger now, although its defense is the same.

Maverick: Magna Centipede


Magna Centipede is weak against the Silk Shot. Although the stage difficulty changes a lot between the different Modes, the boss difficulty is identical. Anyway, in Easy & Extreme Modes, you can also use the Zero Scramble Final.

Magna Centipede attacks:
 * Homing shurikens
 * Magnet Mine
 * Magnetic tail

Upon the enemy's defeat, you get the Magnet Mine. Its shots are remotely controlled: press up or down to change their direction.