Whilst this game has been out for quite some time it still has one of the most underrated multiplayer modes of all time. The below 5 minute video explains a number of things which helps to get an understanding of what MP is based about.
Actual gameplay is focused around slower PvP play, elements of stealth built and foraging for items to craft items within the live battle whilst picking up pills for the side game that has been created just for MP.
I'm going to pick this up again for a little while - if you like Rainbow Six but want something slightly less forgiving then this is great. For me it fits perfectly between R6 and a game like CoD.
Would be good to know if anyone is interested playing this at some point? I'm sure most have it for the SP so it's probably just about installing it again for most.