Need new Multiplayer Shooters

[A Knight]

not sure how realistic this game is but splinter cell double agent (Multiplayer online) i played as much as i could for a long time. It felt to me like the first technology of a shooter game that made us spoiled with technology. I played the second to last recent one i think and i couldnt figure out how to get out of an air vent and stop playing shortly after that. I saw some videos of it online too and it didnt seem too appealing.