Despite being a pretty small game, it makes a good job in terms of entertainment.
Talking about the graphics: they are very weak, to a point that we think that the developers had to make this as fast as they can. This is unlikely for a game that could receive a little more attention, as the game have the "X2" name (however, the game haven't any relations to the movie).
The sounds are just right. they not bad, but not good. But the soundtrack is simply amazing. The musics add to the game a sense of immersion that few games made (the others are, for example, the GTA series). It's very nice to hear that song while you literally destroying the enemy. Yes, the combats are simply incredible. The "strikes" makes your live easier when you fighting with a dozen of characters.
To finish this small review, the verdict: this game was underappreciated by the critic, but I recommend both for newbies in marvel universe or for maniacs.