To unlock samus from metroid prime you must have a saved file with all chozo artifacts and you must have beaten meta ridely, normal ridely&ridley omega factor form. After that you must take out metroid prime and if it lets you put in megaman x command mission and play deafeat all ridelys again. Then it will change to a game called either megaman x: prime or metroid x: command mission. And the do this for the megaman game first you have to have beaten all bosses to scenerio 10 depth dragoon get the tianna key and melda key unlock melda FIRST!
Then you'll see the mechanaloid meltdown do get it! First go up the elevator thing-gy then go into the door you'll encounter an enemy called duckbill mole 2 of 'em lvl. 60's and their minibosses beat the 'use ice' and then get the meltdown and shatter the pink crystal the duckbill moles were in then itll say got absolute zero thats the second hyper mode form for him! Then go to tianna camp and unlock the locked door first beat the people in the room to the right enter then youll see a girl dancing 'weird huh?' she is lvl 77 with two people called belledonas and the 77 is called raffelsian they refill le every turn so have lots of gain hyper and keep using it on absolute zero only!!! That is what you've got to do if you want the cheat to work! And then go out the room get the mech thats there ok you'd I have the caps lock on? Weird any way then go back shatter the pink crystal then itll say 'x ultiamte armor! Thats from mario. Now go to depth dragoons place 'note the cheat will not work if you have gotten the items before scenerio 9 8 7 6 5 or 4 which will be impossible unless you had faith on ur side' then get to depth dragoon don't put zero or x on the left side or samus cheat wont work have a weak person on that side then when you're at d.d. you won't fight him and instead some how all three ridelys will kill him in 1 blast then youll see samus shot about a hundred missles and then they die and on accident 'yeah right!' she shoots the person on the left side and it will say unlocked samus as playable char. And her attacks are ultimate missle shadow blazer and her weapon is 'unatchable gun' its power level. Says invincible it take 1,000,000's out if your luckyalso you now how shiny you are in metroid prime thats her hyper and her hyper attack is shadow blazer it takes out more then 1,000,000,000 damage out. It dosen't matter how lucky you are just push all buttons at the same time!