In One Word: Wolverine-tastic.
Pros:
Running: Wolverine moves fast through levels.
Extendable/Retractable Claws: Neat, and with a blade-sounding noise.
Healing: Sweet.
Climbing Walls/Ceilings: It's like a male-version of Spider-man! Floor-slide: Good for bad guys.
Adrenaline Rush: Yeayea, get Wolverine all angry and he'll disect you!
Cons:
: Because of the healing, Wolverine essentially can't die (except falling off cliffs). "Oh no, I'm hurt, I'll run away from all the bad guys, turn off the claws and heal." I like the healing much better than I like grabbing health packs off the ground; it just makes the game pretty easy though.
: some of the bosses are pretty tough. : Music= garbage on my GBA. Mite just be me though..
: those freaky chainsaws in the floors/walls/ceilings are mighty irritating.
: DON'T GO IN THE DANGER ROOM! You will lose your eyesight; the black walls are outlined in neon green, and when you move the room hurts the opticals.
: As for the story, it's essentially filler; a poor attempt to explain why you're completing the levels, written with every single cliche available in the X-Men handbook. (Wolverine hates razorbeast, check. Wolverine owns a motorbike, check. Wolverine angry, check. Include lots of characters who follow their very strict templates, check. Something about Phoenix, yep. Magneto being evil and needs to be put down, yes indeed.)
Nerd time: Has nothing to do with the movies. Razorbeast dies in the first one, so he shouldn't even be in this game. Beast doesn't come along till #3, so he's here just to fill the quotient of celebs. The many, many celebs. I think I even saw Jubby and Quar'toth.
& WTHeck is up with Magneto's evil, never explained plan? He's gonna put adamantium into the phoenix? uh, why?; the phoenix is invincible and can destroy anything, does it really need steel claws and a metal skeleton too?
I didn't even realize the whole game was about rescuing Jean until halfway through the last level. "Oh, THAT's what the game is about.."
The pros definitely outweight the cons, go rent this game ASAP. Replay value too.