(rating based on the campaign. i played exactly none of the multiplayer.)

not to be a hater but i can't see a world in which this should ever be rated higher than three & a half stars.

the story isn't that interesting, apart from the fantastic finale.

the gameplay is about what you'd expect and that's okay – you're not going into this expecting game of the year. you're going into it for a fun, mostly mindless shooter (except for some levels that are actually unbearable). and it does its job well!