just grabbed Halo: Spartan Assualt. Haven't played much but it looks to be a good bit of fun.

Played through all of Aliens: Colonial Marines on the weekend - co-op mode with a friend. the game is fucking terrible.

I wanted to like the game but the story contradicts the films and doesn't even bother to do a decent job of ret-conning the storyline. overall the writing was very sloppy and it hardly even bothers being a story worth telling.

The issues during development of the game are well documented, and it's obvious while playing. there's no polish, it's all just slapped together.