Being an aliens fan, I found the level of detail in the campaign to impressive. But the game felt old, except for the aim with left trigger stuff. It's a very basic shooter, grenades are their own weapon that you need to switch to in order to use. The AI are very basic, they are about as intelligent as Mine craft's. (see, move towards, and strike once in melee range) they tend to be oblivious to basic obstacles and try to strike through walls or run strait into boxes. Loadouts in multiplayer feel like minor querks, rather than defining aspects of gameplay. A player with the basic starter stuff will appear to have no difference than to one with specialized gear.