DuracellEnergizer said:

I find it pathetic that a group of Marines -- knowing they're going up a whole goddamn hive of nasty man-killing bugs with acidic blood -- armour themselves in bulletproof vests and helmets only, leaving the rest of their bodies open to damage.

Except that they didn't know that. No one really believed Ripley and the marines had never faced anything as terrifying as a Xenomorph before.

That's what bugs(no pun intended) me about the Aliens franchise. One character refers to their mission as a "bug hunt." And now suddenly that's the defacto term for xenos. Whatever the bugs they had to deal with before (most likely a Starship Troopers reference) were not related to Xenomorphs in the least.