Mega Man Maverick Hunter X

Successfully complete the game.

Use the purple Charge Chameleon Sting, then use the Electric Spark attack (charged or not). To dodge his slash, try jumping up the wall. When he shoots, jump up the wall and try dodging bullets like that. When Sigma jumps up the wall from you, fall when he is on the other side of the wall. Repeat the Charge Chameleon and the Electric Spark attack until Sigma is defeated.

Get every upgrade for Mega Man, except for the arm upgrade. Keep playing until you fight Vile the second time in Sigma Palace 3. Defeat him but make sure you do not have the arm upgrade. After you defeat him you will automatically get Zero's Buster from him.

To find the hidden capsule to gain the Hadoken Fireball for X you have to get all Heart Tanks, Sub Tanks, Armor Parts (the arm part can be either the one from Dr. Light or the one you get from Zero in Sigma Palace 3) and beat every boss to gain there weapon. Go to Armored Armadillo's Stage and get through the whole stage without taking any damage then at the end dash off the flying platform and land above the entrance to the boss and the capsule will be there.

If you pass over the X-Buster upgrade found in a Dr. Light capsule during the game, you will be rewarded later in the Sigma Fortress by gaining access to Zero's Buster, which is more powerful than the normal X-Buster upgrade. To do this, simply do not enter the Dr. Light capsule containing the X-Buster upgrade, and play the game all the way to the third Sigma level. Upon facing Vile and beating him in a battle, you will speak to Zero and he will give you his buster. This buster shoots a different third level charge shot than Dr. Light's upgrade, which is larger and more powerful.

Note: You must have completed the game to do this. Use the following with Vile.

Arm: Golden Right
Cannon: Necro Burst
Leg: Burning Drive

Successfully complete the game as Vile. Load the cleared saved game to have unlimited energy for your weapons.

When you get to the first Spike-Tank, wait for it to pass, and enter the room behind its previous location.

At the second dozer mechaniloid, use the Storm Tornado or Fire Wave to destroy it before it demolishes the wall, then jump up the small tunnel.

Storm Eagle's stage beyond blocks that need to be broken with the head upgrade. It is after the thin tower you climb.