I bought it last week and I've decided that I really enjoy this game. I actually find that the squad leader element is one of my favorite parts of the game, along with the intense gore (

). The levels that I like the least are the ones where you're put out on your own in some building with large amounts of Jerries to take care of.
The only thing that annoys me really is the somewhat rinse-and-repeat style that you use when playing through it. The ol' find 'em, fix 'em, flank 'em, and finish 'em is a fun concept until you are forced to keep doing it over and over and over again. That said, I had a blast playing through the single player portion and have been playing it consistently for the past week or so.