- last post: 01.01.0001 12:00 AM PDT
Marines are supposed to suck, especially in legendary, so they can't really help, they hinder. Therefore, if you get bored of the campaign and are good enough to beat it on legendary with out pumping yourself with caffeine and using a game manual, then I would suggest trying to do things such as keeping all the marines alive. It is actually not too difficult if you beat them to the alien attackers.