Firstly, 1st Company marines wear either power or terminator armour. The Deathwing (1st Company of the Dark Angels Chapter) is an exception, in that they only wear terminator armour. The Deathwing is also an exception in that they are the only memebers of the Dark Angel who are privy to the Dark Angel's dark secrets. It's refreshing to see the Dark Angels do something without their dark secrets dominating it.
Why don't they just send the Gurad in? Sure you'd lose a lot, and have to deal with lots of infected Guard, but still better to lose them than marines and terminator suits.
Anyhow, is there anywhere I can download the older game directly based on the Space Hulk game? (I have that game, mostly to get my hands on the plastic Terminators, which have recently been replaced) My old copy I got from somewhere doesn't want to work, although I at least get to hear Genestealer noises. Although the bolters don't go "Dakka" or even "Brakka".
Oh, Genestealers are different from "Aliens" style aliens in that they don't hatch out of your chest, they infect you, are your mind is taken over and your kids are hybrid creatures. After a few generations of hybrids breeding then you get Pure-strain Genestealers, although they might have inherited traits from their host, such as being bigger, having lamprey like mouths with feeder tendrils, extended carapace, or flesh hooks which shoot out of their bodies and hook on to you and drag you to them (or help them climb walls). Stealers also have four arms, if you notice, the upper pand a 3 clawed hand, the lower fairly human-like. And is there any mention of the Tyranids at all?