Defeating Tusk:
Cyclops: Keep doing your laser move.
Psylocke: When he is dashing, do you special.
Gambit: Keep throwing cards.
Wolverine: Hit him as mush as you can.
Beast: Keep head butting him.

Defeating Apocalypse:
Gambit: Hit him as much as possible and when he spikes, throw a card.
Beast: Head butt him as much as possible.
Cyclops: Hit him as much as possible and when he spikes, laser him.
Wolverine: Claw him as much as possible, and when you see where he is going to appear, step away, jump, wait, and hit him.

Defeating Juggernaut:
Gambit or Wolverine: Step on a platform and let him charge at you. Jump beside him and repeatedly hit him as fast as possible.

Level Status Password
2 Cyclops, Psylocke, Beast and Gambit have 4 lives Password: CCBW CWGW
3 All characters have 4 lives Password: APCP ACGW
4 All characters have 4 lives Password: MMWW ABGX
5 Wolverine has 5 lives Password: WXMP-CMAA
6 Cyclops, Psylocke, and Beast have 3 lives Password: PBMP WMMP
6 Wolverine has 5 lives Password: APAW MGAG
7 Cyclops, Psylocke, Beast and Gambit have 3 lives Password: BMWC MBCW
7 Wolverine has 5 lives Password: MMMC AMAM
8 Cyclops, Psylocke, Beast and Gambit have 3 lives Password: XPCG MCCX
9 All characters have 3 lives Password: GCBC WCPB
10 All characters have 3 lives Password: BMMW AMXG
11 All characters have 3 lives Password: XPAP MGXM


Key

A: Apocalypse
B: Beast
C: Cyclops
G: Gambit
M: Magneto
P: Psylocke
X: Xavier
W: Wolverine

Other passwords:
Last level, have Psylocke with 4 lives and Gambit with 0 lives: APCP ACAW
Last level, Gambit and Beast have 2 lives, Psylocke and Cyclops have 3 lives, and Wolverine has no lives: PPPP PPPW
Tusk, everyone has 4 lives: APCP ACGW
Facing Exodus: GGMW BAXM