- Wolverine Danger Room missions
At the Cerebro Files menu, press Down(2), Up(2), Right, Left, Right, Left, Begin to unlock the bonus Wolverine Danger Room missions.

- Nightcrawler Danger Room missions
At the Cerebro Files menu, press Up(2), Down(2), Left, Right, Left, Right, Begin to unlock the bonus Nightcrawler Danger Room missions.

- Danger Room missions
Successfully complete an Act with a character to unlock one of their Danger Room mission. Successfully complete all three Acts with a character to unlock all three of their bonus Danger Room missions.

- Iceman Danger Room missions
At the Cerebro Files menu, press Right(2), Left(2), Down, Up, Down, Up, Begin to unlock the bonus Iceman Danger Room missions.

- Bonus costumes
Acquire all Weapon X files with a character to unlock their street costume. Acquire all Sentinal Techs with a character to unlock their comic costume.

- Finding Tech Pieces
To save time and frustration looking for Tech Pieces, go through the level on novice to find all six Tech Pieces, then distribute mutation and save the game. Go back on the higher levels to get the missing mutations, without worrying about racing around trying to find the pieces (especially on timed missions).

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

20 Points
Danger Room Challenge for Iceman	Successfully complete Act 1.
Danger Room Challenge for Nightcrawler	Successfully complete Act 2.
30 Points
Danger Room Challenge for Wolverine	Successfully complete Act 3.
50 Points
X-Men	Accumulate a 950 achievement score.
70 Points
Champion For Nightcrawler	Acquire all Sentinel Tech as Nightcrawler.
Secret Identity For Iceman	Acquire all Weapon X Files as Iceman.
Champion For Iceman	Acquire all Sentinel Tech as Iceman.
80 Points
Secret Identity For Nightcrawler	Acquire all Weapon X Files as Nightcrawler.
110 Points
Secret Identity for Wolverine	Acquire all Weapon X Files as Wolverine.
Champion For Wolverine	Acquire all Sentinel Tech as Wolverine.
120 Points
Evolution For Wolverine	Improve Wolverine with all available mutations.
125 Points
Evolution For Iceman	Improve Iceman with all available mutations.
Evolution For Nightcrawler	Improve Nightcrawler with all available mutations.

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