The series is totally epic and funny as all hell. I thoroughly enjoyed the many deaths of Shane. And personally I wouldn't mind bringing him back for the 4th installment just to pick on him some more :-D Overall the idea has been done before but you put your own original twist on it and I am LOVING it. Wouldn't stop playing till I got every medal.
And P.S., I'm digging the music, it works so well for the story line.