Clip one: Awesome! I could see that being pretty atmospheric on the big screen - Well done on low-quality. Not loving how familiar Tyler's score is. Would'a liked something new.
Clip two: ...It's like a connect the dots of clichés. Was this scene really from the same movie as the first? "Get to the chopper" ... oh come on, if it ain't gonna be "GET TO DA CHOPPAAAH!", don't freakin' bother. And how can Dallas be fine after shooting an Alien that's right above him, yet the hunter at the beginning gets splashed from a hugger a few feet away?
Clip four: Yeah ... Chet, the badass, whimpers like the newborn and starts backing away when he gets nicked on the gut. And more Aliens standing there like ragdolls while Wolf busies himself doing more important things, like cleaning his nails.
I think I should rescind a statement; how is the first clip from the same movie as the other two? Dear Lord.