I remember playing the game way back in the past (2014 or something like that) and I must say I didn't remember much, except the fact that I fought aliens who wanted to take over our planet.
I played it now on XBOX 360 and I must say it's way better. It's a three-squad member game; you're the leader and you can choose to two agents alongside you. You can upgrade your perks and you have some side missions which you can attend to (the RPG flavour) , but basically one must fight and eliminate the alien enemies. You can make your agents do whatever you want them to do (a little strategy). The weapons are human and alien, too.
The graphics is great and on my TV looks great. It has no observable glitches or bugs.