I didn't know of this until I heard word of it on a speedrunner's channel, which is a combination of a Password with a Command Code.
After entering this password, hold L, R, X and Down, then press Start. This enables you to start with all the items and the Hadoken without having to play through Armored Armadillo's stage a total of five times to make the capsule appear at the end!
Each boss in Mega Man X has a weekness from another boss. Here shows whose weapon to use against another maverick.
Chill Penguin-Use Fire Wave
Spark Mandrill-Use Shotgun Ice
Armored Armadillo-Use Electric Spark
Launch Octopus-Use Rolling Shield
Boomer Kuwanger-Use Homing Missle
Sting Chamelion-Use Boomerang Cutter
Storm Eagle-Use Chamelion Sting
Flame Mammoth-Use Storm Tornado
If you use the special attacks, it will make the battle much easier.
Here is an easy way to get 9 lives. Go to Armored Armadillo's Stage and at the beginning of the level, look for a bat that looks different from the others. This bat is from the old Megaman series. You have about a 67% chance of getting a life from it every time you destroy it.
Must have Heart Tanks, Sub-Tanks, enemy weapons, and power-ups. Then, go to Armored Armadillo's level. Reach the final mine cart, which launches you through the air at the end of the level. Just before you reach the wall, jump up and climb the wall. At the top, there will be a large Energy Unit. Get it, and then jump into the pit and die. Repeat this step five times. On the fifth time through, a capsule will appear on that same ledge. Dr. Light will then give you a Ryu-style Hadouken for Mega Man to use.
Select the password option at the title screen and enter the following in the 3X4 grid, inputting the password from left to right, starting from the top left corner:
8441 2176 4423 4 Sub-Tanks, All Turbo Hearts, All Upgrades, All Bosses Defeated
5724 8418 3588 All 4 Subtanks, no armor, no weapons, no hearts
2653 3858 7584 All 4 Tanks, all heart tanks, and all bosses defeated.
8447 4666 6156 All abilities, heart tanks, sub-tanks, all bosses defeated, Zero's buster
6624 5468 8588 All armor upgrades, subtanks
4723 2486 1324 All Bosses Defeated - No Leg/Body/Helmet/Buster/Heart/SubTank
4653 4688 7884 All bosses defeated 2 turbo hearts 2 subtanks
2137 3188 8121 All bosses except Boomer Kuwanger and Sting Chameleon dead.
2556 2582 7114 All bosses except Sting Chameleon dead.
3676 4667 5148 All powerups and armor upgrades, all bosses beaten the first time through.
3748 8612 5524 All Subtanks & Hearts, NO Armor & Weapons
6485 1146 2321 All Upgrades No bosses Defeated
5583 4618 5824 All Upgrades, All bosses defeated, 1 turbo heart.
4423 8832 7824 All Upgrades, Chill Penguin Defeated, Storm Eagle Defeated
8141 2136 4426 All weapons, sub tanks, hearts, and levels completed
4764 8768 7748 Arm Capsule only
5147 8437 4536 Armored Armadillo defeated
7374 2268 6281 Beat the top half, and have collected the power ups on the top half.
4764 5788 3748 Body Capsule only
5151 3427 4261 Boomer Kuwanger defeated
5286 7136 5124 Chill Penguin and Storm Eagle dead.
4768 7258 1871 Chill Penguin Defeated
5337 5377 4171 Chill Penguin, Storm Eagle, and Flame Mammoth dead.
2147 5277 1281 Chill Penguin, Storm Eagle, Flame Mammoth, and Spark Mandrill dead.
6431 5168 8171 Chill Penguin, Storm Eagle, Flame Mammoth, Spark Mandrill, and Armoured Armadillo dead plus slide ability and head capsule.
2656 5112 3164 Chill Penguin, Storm Eagle, Flame Mammoth, Spark Mandrill, and Armoured Armadillo dead.
7431 3842 8523 Everthing unlocked ecxept no beaten Sigma
8437,2788,8161 everyone accept sting chameleon defeated, 6 heart tanks, 3 armor upgrades, and 3 sub-tanks
8441 2336 2421 Everything obtained except Leg Capsule
3733 6838 8744 Final Sigma Level/Last Battle
1764 1488 7748 First mini-level beaten
1573 5232 7264 Flame Mammoth defeated
1447 1838 1271 Full armor, 2 hearts, 2 sub-tanks, Chill Penguin, Storm Eagle and Flame Mammoth deafeated
5447 4177 4536 Get an extra life tank
6111 8747 4181 Have Storm Eagle, Flame Mammoth, Chill Penguin, & Boomer Kuwangtang dead w/ chest, helmet, arms, leg upgrades, 1 sub-tank, & a turbo heart
4664 1718 7748 Head Capsule only
1556 6642 7448 Launch Octopus defeated
5382 8566 2656 Leg Dash No bosses Defeated
4425 7272 3821 Leg Dash, Helmet Enhancement, No Bosses Defeated
1422 1412 7756 Leg Dash,Helmet enhancement with no bosses defeated
2653 7248 6488 No Leg Dash, Chill Penguin Defeated
5385 7136 6321 Opening Stage beat
5131 7358 4181 Spark Mandrill defeated
5385 7136 6861 Sting Chameleon defeated
6483 7376 5124 Storm Eagle defeated
3475 5668 2581 To have all Turbo Hearts, all Sub-Tanks, and all Armor Upgrades with no bosses defeated
The following passwords can be used to skip to the designated part of the game. (note: the Hadouken Fireball can NOT be saved via a password, you must obtain it every time you restart the game.)
Intro Level Completed:
Chill Penguin Defeated, Dash Boots Obtained:
Storm Eagle Defeated, Dash Boots and Energy Tank obtained:
Rangda Banga Defeated, All Powerups obtained:
*P.S. more can be found in my future Megaman X FAQ*
First you have to beat Chill Penguin, Flame Mammoth, and Storm Eagle First. Then go to you know who's stage. You will see that the stage is messed up. So now you don't have to dodge those electric things or that first boss.
Get three sub-tanks and make sure one of your special weapons has less than full power. Then, with the weapon that has less than full power selected, grab a weapon capsule and immediately hit start. If you did it right, you'll have a fourth sub-tank. Fill it using the same method, just don't over fill or you'll delete it and your third one. It recovers health just like the a normal one
This password will give you every item, weapon, and part in the game except for the Hadouken Fireball: