I shouldn't... But I love it!
The online element is a welcome addition and lets you take down the harder officers with ease, and the social side is fun if you just want to mess around and talk.
The gameplay, like the rest of the series, is the same as ever really:kill as many easy minions as possible and then take down a slightly harder guy. Mindless fun really!
One problem though, is the fact that Aeria games tries to make you pay for something whenever it can. I however, have decided not to pay at all and I still enjoy this game after several months.
In the end, I love this game and will keep it on my computer until I get a new computer (whenever that is). So, while it is one of those games that you can't tell your friends about playing, it doesn't mean you should ignore it. Come on, its an awesome game, besides, it's free!