This game pretty good if people play. The game is simple setup where you have x-ray vision for few seconds or just shoot people in face. Can also use emp style grenades to confuse enemy with x-ray. No female characters so x-ray vision has limited use.
Like I say this is a good game if people play. However, people not play. Server always dead really so you are spending all evening watching lobby. Sometimes I use pen to write pretend names on my screen but computer too clever. Game do not start unless real people join.
You can play coop mode with friends or more likely alone. This is not bad for a while but you only have limited number of maps, and enemies always same. After a while you find X Factor interesting. When X Factor interesting you need new hobby.