Absolutely excellent coop game. Get your friends together and tear a scar through the legion's forces. Ship Combat feels great once you get used to the flight controls. Nothing feels better than weaving between lines of gunfire and dropping flares to escape missiles while your gunner nails hostile ships with your massive railguns. Ground combat feels good too and rewards good teamplay, especially the artifacts that give you buffs when you're near teammates. Definitely worth picking up if you have friends to team up with.

For those looking for a solo experience, I'd say look elsewhere, this game is built around having a team.