X-Men Legends II: Rise of Apocalypse

To 'unlock' the character X-Man, You need to find the playable comic mission 'Age Of Apocalypse' in the 1st act of the game.

Press Up(3), Down, Right(2), Start at the store run by Forge or Beast. The sound of tech-bits will confirm correct code entry.

Press Right, Left(2), Right, Up(2), Right, Start at the review menu.

Some characters begin the game with some alternate costumes available:

Bishop: 70's costume
Colossus: Xtreme costume 2
Cyclops: Xtreme costume 2
Jean Grey: Dark Phoenix costume
Juggernaut: Original costume
Magneto: Ultimate Non-Helmet costume (starting costume without helmet)
Nightcrawler: Xtreme costume 2
Rogue: Coat costume
Scarlet Witch: 70's costume
Storm: 70's costume
Sunfire: 70's costume
Toad: Brown costume
Wolverine: Ultimate costume

Successfully complete Act 1 to unlock the following costumes:

Colossus: 70's costume
Cyclops: Original costume, 70's costume
Iceman: Snowman costume
Jean Grey: Phoenix costume, 70's costume
Nightcrawler: 70's costume
Storm: 70's costume (another one)
Wolverine: Original costume (Brown and Gold)

Successfully complete Act 2 to unlock the "Age of Apocalypse" costume for all characters that have them.

Successfully complete Act 4 to unlock the following costumes:

Colossus: Xtreme costume, Gladiator costume, Ultimate Non-Steel Skin costume (starting costume with normal skin)
Cyclops: Xtreme costume, Snowfields costume
Iceman: Non-Ice Skin (the same as in X-Men Legends)
Juggernaut: Original Non-Helmet costume
Nightcrawler: Xtreme costume
Storm: Xtreme costume, Snofields costume
Wolverine: Weapon X Experiment costume, Xtreme costume, Snowfields costume

The bonus characters already have the following costumes available:

Deadpool: Unmasked costume
Iron Man: 2099's costume, Age of Apocalypse costume
Professor X: Shadow World costume (the same from X-Men Legends)