Possible yes. Is it worth wasting countless hours of your life on? No. The achievements for this game are a complete joke. Don't even waste your time trying to get 1000. The list of nom de guerres is so long it's absurd and one of the achievements requires you play enough of the campaign to beat the game 14 times.
I loved the first game and would still play it online if anyone was there. But LP2 is a huge turd in comparison and the idiotic achievements are quite possibly the number one reason for that.