throughout the movie, the marines get bogged down in a sublimely obvious ambush, they get f**ked over by the poorest officer this side of the galaxy, they lose half of their total force in the first encounter and only get four confirmed kills, they manage to lose their only evac and make a f**king fusion reactor go critical and cause a nuclear explosion(that shit isn't even possible!) simultaneously, they fail to secure a goddamn fake ceiling and lose the rest of their detachment, and they still don't manage to neutralize the threat in the end. if there was a minimal hint of ooh-rah in the movie, you bet your f**king ass it was paid back with the most intense rape a marine can get outside of FOB Langman. it was literally a movie about them getting bitten in the ass by their own shit. every single line of arrogant dialog gets a comeuppance.
and let me remind you they were carrying guns, space, future, pulse guns, the kind that they write ludicrous tabletop games about. the one in the first movie was easily impaled by a cheap ass harpoon. what the hell did you expect, more slasher bullshit where everyone forgets to try to fight back with an appropriate response and just let the f**ker wander invincible for the whole runtime like if that was actually tense to watch?(because that's what people who can't shut their vaginas suggest about what the alien should be). for once someone in a monster movie does the rational thing and calls the really big guns, a somewhat realistic fight happens that the aliens actually manage to win while still having weaknesses, demonstrating they are a threat that still can exist in a realistic universe and are, in fact, a palpable threat to mankind like the first movie suggested, and you can't appreciate it?
"no! it makes them dumb weak bugs! I DON'T LIKE IT! GEARS OF HALO!", even when they spend the whole time trying to get the point across that they're not. now go be pretentious somewhere else.
