Extreme costumes
On the main menu enter UP, UP, RIGHT, LEFT, DOWN, DOWN, START

Iceman tip
Iceman can freez fire so yo can get past a fire line that blocks the way.

Easy EXP. for up to lvl 13
After you aquaire the danger room go to magma's throwing training and keep defeating the ropbots but not throwing them and continue to do this until you get lvl 13 characters.

How to kill the first boss
Just use the super claw and do it all over again when you have low health and no health packs dont panic just run away from the boss to recharge health and energy but you have to change the hp and ep type when you change it read the info in the box

Easy Level Up!
WHen you can access the danger room you should collect the discs which require a team to complete,once that's done keep on playing these danger room missions its a win,win situation even if you fail you characte still keep EXP(note: the higher your lvl the more EXP you need so it will get a lot more harder to Level up your X men)