I dont mind so much, since you do have to sneak up on somebody, or weaken them. What I dont like is when I turn around, see the alien/pred start shooting (since my fav is marine) put 10 rounds into them, then suddenly they warp behind me and steath kill me like they'd been behind me the whole time. At first I thought it was just lag, but not when you actually do serious damage to them before they get it off. otherwise, I love the shock factor., of gunnin down a couple of xeno's, only to have my head ripped off by a pred who, for all I knew was just waiting for me to not be paying attention