The character that kills Lumine (Axl, X, or Zero) will determine which ending sequence appears.
Armor capsule in Earthrock Trilobite stage
To get past the canisters and get to the Armor Pod, you need the weapon acquired from Burn Rooster. Just shoot and get the armor.
Axl's White Armor
Beat the game and have all of Axl's metals, then beat the last boss with a double attack using Axl.
Bamboo Pandemonium stage: Leg Part I for X
To get this, Ride Armor and Zero are suggested. After you get past the trap room (where you fight all the Ride Armors), kill everything here. As Zero, take the Ride Armor up on the elevator, hover over, air dash, then finally jump out and do a double jump. If done correctly, you can switch to X and get the part.
Battle Cutman
If you have a Megaman X: Command Mission save on the same memory card that you are saving on in X8, you can battle Cutman at the end of Optic Sunflower's stage.
Bonus characters
Successfully complete the game and load your cleared saved file. The navigator used most to complete the levels will be unlocked (Alia, Layer, or Palette). Alia is similar to X with an X-buster, but cannot use armor pieces. Layer is similar to Zero with a Z-saber. Palette is similar to Axl, but has no DNA-copy abilities.
Buster capsule to X's Neutral Armor in Noah's Park stage
After you complete the Noah's Park stage, return there. The door is now open at the place where you jumped up to continue.
Buster Part capsule in Bamboo Pandemonium stage
Note: Do not lose Ride Armor. Have X and Zero, and Palette as navigator. With the Ride Armor, get to the area after destroying all the enemy Ride Armor. Palette will say there is something old nearby that can be useful. First, take the Ride Armor up the elevator to the enemy Ride Armor. Then, jump to the left and press Circle with Zero in Ride Armor. When you get to the spikes, quickly double jump to the ledge avoiding them. Switch to X to get the part.
Codes
At the Title Screen you canput in these 3 codes.
Ultimate Armor X at character screen = Left,Left, Left, Right, Right, Right, Left, Left, Left, Left, Right, Right, Right.
Black Zero at character screen = L1, L1, R1, R1, L1, L1, L1, L1
White Axl at... (you get it) = L2, L2, L2, R2, R2, R2, L2
Now start a new game and they will be there.
Codes
At the Title Screen you canput in these 3 codes.
Ultimate Armor X at character screen = Left,Left, Left, Right, Right, Right, Left, Left, Left, Left, Right, Right, Right.
Black Zero at character screen = L1, L1, R1, R1, L1, L1, L1, L1
White Axl at... (you get it) = L2, L2, L2, R2, R2, R2, L2
Now start a new game and they will be there.
Defeating Bosses
Just have both character's life at full and perhaps a Life Tank. You can kill every Boss with only the Buster and Saber.
Different Endings
Get the final hit on the boss with Axl, X, or Zero to see one of three different endings.
Earthrock Trilobite stage: Armor capsule
To get past the canisters and get to the Armor Pod, you need the weapon acquired from Burn Rooster. Just shoot and get the armor.
Easy combo multiplier
You must have the D-Glaive Weapon for Zero, the Rasensetsu (the weapon obtained from Dark Mantis). Enter a level with Zero and look for a the enemy that shoots three rockets at you at the same time. Equip the D-Glaive and stand far enough from the enemy to where you will not kill him, but will still be able to get him to shoot rockets at you. Then, perform the spin attack obtained from Dark Mantis in mid air. After awhile you will rack up a large number of combo attacks.
Easy Metals
Go to the Earthrock Trilobyte level with Axl to the point where you have to start chasing the giant Mechaniloid. Then, just have Axl bombard it with his gun while your chasing him, and he'll drop TONS of red metals. Also helps to proceed slowly, cause while your standing still, he won't be going anywhere, and you can get more metals off of him. And before he gets away, jump into the spikes to use a retry chip and try again. You can get over 10,000 metals in one trip with a little luck. The trick also works with X, but it works better with Axl due to his rapid-fire ability.
Easy money
To get extra money, just stay in one area and run right and left. You get the money when you run left, and you must run right or it will not work. Do not press Circle going both ways.
Fight against Cut Man
When "Press Start" appears at the title screen, press Left, Circle, Up, Triangle, Down, X, Right, Square, L1, R1, L2, R2. Start a new game on the normal or hard difficulty setting. Cut Man will be your opponent at the end of Optic Sunflower's stage.
Fighting as the navigators
To be able to fight as either Alia, Layer, or Pallette, you must beat the game using one more than the other. After doing so, save and load your clear data and make your way to the R&D lab. scroll down a little to find either Alia Buster, Layer Rapier, or Pallette (something). To obtain the other two, just use one to complete four stages, and do the same for the other one. You need at least 36000 metals to buy them (if you have the metal discount chip already). Otherwise, they cost 40000 metals.
Finish practice rooms easily in Optic Sunflower stage
The following is a list of how to complete each room easily. You must have X (with either the Ultimate or the Neutral Armor; and the Giga Attack or the Nova Strike) and Zero for this level. The following items are also necessary to do this easily: The D-Glaive (For Zero), The Rasensetsu (the weapon obtained from Dark Mantis, it looks like you are performing a ultra fast spin in mid-air) for Zero, Shadow Runner from Dark Mantis for X, and the Giga Attack or Nova Strike. Note: It is easier to finish this stage if you have the Ultimate Armor.
First room: Ocean: Must defeat more than ninety enemies. Use Zero with D-Glaive equipped. When the enemies start appearing, use the Resensetsu. If done quick enough, you should have defeated ninety enemies.
Second room: Falling in Mid-Air: Must defeat enemy within ten seconds. Use X with Nova Strike/Giga Attack equipped. When you see the enemy he will pause for a moment in mid-air, just short of where you need him to be. Just at that moment, perform the Nova Strike or the Giga Attack.
Third room: Multiple Platforms: Defeat an enemy within ten seconds. Use X with Nova Strike or Giga Attack equipped. Most of the time the enemy will be behind and above you. You must turn around quickly and jump. then perform the Nova Strike or Giga Attack.
Fourth room: Rotating Gears: Must be completed within ten seconds. Have either X or Zero. You will notice two enemies jumping near you from either side. Wait for one of the enemies to get close to you. then press R2 to perform the Buddy Attack. If done correctly you will defeat both at them at the same time.
Fifth room: Big Head Man: Must be completed within ten seconds. Use X with Shadow Runner equipped. Start jumping and shooting repeatedly at the enemy with Shadow Runner. He will get smaller, but become faster as he shrinks. You just need to keep up on him.
Sixth room: Conveyor Belt: Must be completed within ten seconds. Use X with Nova Strike or Giga Attack equipped. Face him and just use the Nova Strike or the Giga Attack.
Seventh Room: Two Guards: Must be completed within ten seconds. Use X with Nova Strike pr Giga Attack equipped. One of these guards will jump just before you attack him. Back up against the wall and turn around quickly, then jump and perform the Nova Strike or the Giga attack. Timing is crucial.
Eighth room: Spinning Dragon: There is no time limit. Either use X equipped with Nova Strike or Giga Attack; or Zero equipped with D-Glaive. When you encounter Spinning Dragon, use the D-Glaive with the Buzz Saw Attack.
Note: Vile may appear at one of the end levels. If he does, you may have to restart and try again. He also may show up in the eighth room. If so, you will not have to worry about a time limit; just be careful you do not fall off the train.
Gravity Antonion stage: Head capsule to X's Neutral armor
Go to the Gravity Antonion stage. Use Palette as Navigator (Axl and X recommended). When you reach the room with two teleporters, switch the room twice and hover over the spiked area to the right. Land in the middle break and enter the teleporter.
Gravity Antonion stage: Zero's Rare Metal
Zero's Rare Metal is found in the Gravity Antonion stage. Use Axl and Zero, with Layer as Navi. Copy the DNA of the characterswho walk and dash on spikes. It is in the room after the Skipe Block mini Boss, not right after. It is about the third room after, in the far lower left corner.
Head capsule to X's Neutral armor in Gravity Antonion stage
Go to the Gravity Antonion stage. Use Palette as Navigator (Axl and X recommended). When you reach the room with two teleporters, switch the room twice and hover over the spiked area to the right. Land in the middle break and enter the teleporter.
Infinite Metals
To use this trick, you will need to have obtained and bought the Metal Generator. Then you need to beat at least one maverick so that the Noah's Ark stage will be unlocked. Now, return to the Noah's Ark stage using any character. Take a rubber band and rubber band the left dual shock stick in the Left position so that your character runs to the left side of the screen and just runs against the side of the screen constantly. Eventually you will start generating metals every few seconds. Now just turn the TV off and let that run overnight or whatever. Within a few hours, you will have almost 100,000 Metals.
Infinite money
First, buy some items in the R&D lab. Make sure your money is at 0 or it will not work. Then, check anything you have not bought, and you should be able to buy it. This is an easy way to get the other characters and get them maxed out.
Leg Part I for X in Bamboo Pandemonium stage
To get this, Ride Armor and Zero are suggested. After you get past the trap room (where you fight all the Ride Armors), kill everything here. As Zero, take the Ride Armor up on the elevator, hover over, air dash, then finally jump out and do a double jump. If done correctly, you can switch to X and get the part.
Light Generator and Rare Metal in Pitch Black stage
Have Axl and X, and Pallete as your navigator. When you get into the room where Palette says there is a generator, have Axl go into a spotlight and copy a guard. When you get to the ledge where you jump down, do not do so yet. Instead, jump on the other ledge and copy the guard on the ledge. Jump up to the room and you will find a sleeping guard. Do the salute and he will open the door for you. Use the Plasma Gun or Thunder Dancer on the generator to activate it. Also in that same room, use a Charged Crystal Wall to bring up a Rare Metal.
Megaman X8 Codes
Megaman X8 Codes only work on normal and hard modes.
Noah's Park stage: Buster capsule to X's Neutral Armor
After you complete the Noah's Park stage, return there. The door is now open at the place where you jumped up to continue.
Optic Sunflower stage: Fight Cutman
Start the game with a Mega Man X: Command Mission saved game file on your memory card. Immediately before you fight Sunflower, you navigator will say something about a signal marked "CM". A portal will open, and you can fight
Cutman. He can be killed with a charged Buster Shot.
Play as Alia
When "Press Start" appears at the title screen, press Down, R1, Up, L1, Square, X, Triangle, Circle. Start a new game on the normal or hard difficulty setting. Alia can now be purchased at the development shop.
Play as Black Zero
When "Press Start" appears at the title screen, press L1(2), R1(2), L1(4). Start a new game on the normal or hard difficulty setting. Black Zero can now be purchased at the development shop.
Play as Layer
When "Press Start" appears at the title screen, press Square(2), Right, X, R1. Start a new game on the normal or hard difficulty setting. Layer can now be purchased at the development shop.
Play as Palette
When "Press Start" appears at the title screen, press R1, X, Left, Square(2). Start a new game on the normal or hard difficulty setting. Palette can now be purchased at the development shop.
Play as Ultimate Armor X
When "Press Start" appears at the title screen, press Left(3), Right(3), Left(4), Right(4). Start a new game on the normal or hard difficulty setting. Ultimate Armor X can now be purchased at the development shop.
Play as White Axl
When "Press Start" appears at the title screen, press L2(3), R2(3), L2(3), R2. Start a new game on the normal or hard difficulty setting. White Axl can now be purchased at the development shop.
Rare Metal and armor piece in Avalanche Yeti stage
After you defeat the mini-Boss the second time (use Axl and Zero with Palette as navigator), Palette tells you that there is an ice path on the top pf the ledge. Go up there with Zero, then use Axl to hover over to the left to get the Rare Metal. Go back to that stage with X and Zero. After defeating the mini-Boss the second time go back up the ledge (before going to Avalanche Yeti) with Zero. Melt the ice with either weapon obtained from Optic Sunflower, then switch to X to get the Helmet H armor piece.
Rare Metal in Burn Rooster stage
Have Axl and anyone else and Layer as navigator. Get to the area where you see a flying guard. Layer will say that he is copyable. Get the Copy chip from him and go back to the place where the two bats were hanging. Activate the guards copy DNA. You will see a small hole in the area with spikes around it. Fly into the hole to get a Rare Metal. Additionally, have Zero and someone else with Palette as navigator. When you get the T breaker and the weapon from Gravity Antonion, return to this stage. Get to the part where Palette says you can break the floor in this area. Get out the T Breaker and use Gravity Antonion's move on the floor. It will break, and you will fall down to the Rare Metal.
Rare Metal in Noah's Park stage
When you have the Icarus Armor, go to Noah's Park stage again with Pallete as navigator. When you get to the room where she says "Find a way to break those rocks above you", jump up and hit the rocks with the Icarus Armor. Up there is a Rare Metal. Additionally, have Zero and somebody else, and Alia as navigator. At the first waterfall she will say there is a ledge that you can jump up to. That is where the Rare Metal is located.
Rare Metal in Pitch Black stage
After you start the generator, continue with the stage. Wait until you get to the end of this room. Do not go through the door yet. Because the lights are now on, you will see two platforms above you. Note: The second one may be difficult to see. Use somebody that can jump high to reach the Rare Metal on the second platform.
Recommended Boss order
The following is the recommended order of Boss to take on based on weapon weaknesses. Note: Vile is weak against Yeti's ice weapon.
Bamboo Pandemonium
Earthrock Trilobite
Gigavolt Man O War
Avalanche Yeti
Burn Rooster
Optic Sunflower
Dark Mantis
Gravity Antonion
Use the following Boss order, with the corresponding weapon weakness.
Use the following Boss order. Each Boss' weakness is the weapon acquired from the Boss listed above it. Though Earthrock Trilobite's helmet is destroyed by the gravity weapon and it does more damage, attacking with guard breaking moves (full charge, third swing, eighth shot) will only knock the helmet off and he will be vulnerable while he tries to return to it.
Earthrock Trilobite (weak against Guard Breaks or Gravity Weapon; harder as he is not distracted)
Gigavolt Man-O-War (weak against Avalanche Yeti)
Burn Roster
Bamboo Pandamoniam
Optic Sunflower
Dark Mantis
Gravity Antionim
Shoy-Ru-Ken (Street Fighter move)
Choose Ultimate Armor X (only) and press TRIANGLE and UP while your signal is X. You now should do an uppercut from Street Fighter named Shoy-Ru-Ken.
Sigma-Blade
When "Press Start" appears at the title screen, press L3(2), R3, L3(2), R3, L3(2), R3, L3(2), R3. Start a new game on the normal or hard difficulty setting. The Sigma-Blade can now be purchased at the development shop.
Special Armors
Beat the game on normal or hard difficulty and obtain all of each character's chips to make their special armors available. For X and Zero, you simply need to obtain all of their chips (including the Sigma Blade for Zero) and defeat Lumine. After you beat Lumine and start a new game on the clear data, beat Noah's Park (the first level) and when you select your character, the seperate armors should be available.
X obtains the ultimate armor (not as cool looking as the ones from X4-X6) and Zero obtains his Black Armor.
Axl requires special circumstances to actually obtain his white armor, at least he did in my case. To get Axl's white armor, you must obtain all of his chips and deliver the final blow to Lumine with Axl using a double attack.
Axl becomes white and powder blue, and he actually looks a little cooler.
The Return of Cut Man
There are two ways to fight Cut Man in this game.
1. If you have a Command Mission (PS2 game) save file on your memory card, you can fight Cut Man after defeating Optic Sunflower.
2. At the title screen (when it says "Press Start"), press left, circle, up, triangle, down, X, right, square, L1, R1, L2, and R2. Start a new game, and you'll be able to fight Cut Man after defeating Optic Sunflower.
Weaknesses
Most bosses in Megaman X8 have a certain weapon they're weak against. By using these weapons against them, you can deal more damage per attack.
Although Axl also has weapons that are effective against the bosses, his weapons deal lesser damage than X's and Zero's.
X's Ultimate Armor
Beat the game with all of X's metals and all 8 pieces of armor.
Zero's Black Armor
Beat the game and have all of Zero's metals purchased.
Zero's Rare Metal in Gravity Antonion stage
Zero's Rare Metal is found in the Gravity Antonion stage. Use Axl and Zero, with Layer as Navi. Copy the DNA of the characterswho walk and dash on spikes. It is in the room after the Skipe Block mini Boss, not right after. It is about the third room after, in the far lower left corner.
Zero's Sigma-Blade
Beat the game and use the cleared save and the Sigma-Blade can be bought at the lab.