In the movies, a huge weakness is the reliance on the characters to be oblivious or idiots in order to get killed. This is especially true in Alien, where every death can be attributed to factors beyond the alien itself. I never felt that they were that much of a threat with the exception of facehuggers.
Alien (I don't know how to do the text on spoiler tags)
In Alien, it's nothing more than an apex predator crossed with a parasitic wasp. Through various contrivances, it is never met with a credible threat to its well being until Ripley is finally able to compose herself.
Aliens
Alien 3 was the first time I thought of them as a credible threat as it was going up against a violent prison population. Some of the deaths that do occur still are induced by obliviousness, though. Especially when
In Alien Isolation, though, your weapons are useless against it. This station was home to well over a hundred people yet this one creature managed to kill most of them and have the remainder cowering in the corners. It's clearly a very credible threat and one that demands respect. Even when placed toe-to-toe with people who are armed, aware and capable it comes out on top effortlessly. For this reason, I think Alien Isolation is the best depiction of the creature.
Alien (I don't know how to do the text on spoiler tags)
Kane: shouldn't have been so eager to stick his face near an unknown organism. Other crew members should have asked more questions about his conditions. In fact, there's a deleted scene where Ripley asks about a stain on his lungs and Ash responds with "It's blocking the scanner." Nothing comes of it.
Brett: Shouldn't have gone off on his own. In his defence, no one could have predicted how large the creature would have been.
Dallas: Lambert's tracker failed and everyone panicked.
Ash: Killed by crewmembers for obvious reasons.
Parker and Lambert: Killed because Lambert froze, preventing Parker from frying the bastard. Forced to rush it which got him killed and she just stood there.
Ripley: It fails to kill her a few times in the last 20 minutes of the movie. Worst it when she accidentally wakes it. It knows she's there and thus a threat, but apparently it can't be bothered to shake a goddamn leg. It also takes its sweet time attempting to kill her when she forces it into action.
Brett: Shouldn't have gone off on his own. In his defence, no one could have predicted how large the creature would have been.
Dallas: Lambert's tracker failed and everyone panicked.
Ash: Killed by crewmembers for obvious reasons.
Parker and Lambert: Killed because Lambert froze, preventing Parker from frying the bastard. Forced to rush it which got him killed and she just stood there.
Ripley: It fails to kill her a few times in the last 20 minutes of the movie. Worst it when she accidentally wakes it. It knows she's there and thus a threat, but apparently it can't be bothered to shake a goddamn leg. It also takes its sweet time attempting to kill her when she forces it into action.
Aliens
First encounter: The marines pressed on into an unknown and evidently hostile area effectively unarmed. Would have been worse if Drake and Vasquez didn't disobey direct commands and Hicks didn't carry around his personal shotgun. Also relied upon sheer incompetence of commanding officer.
Dropship: Takes Spunkmeyer and Ferro by surprise. They were never informed of what was going on.
If the aliens were half as threatening as they were supposed to be, everyone would have died. Instead, they run headlong into enemy fire and then get their ass handed to them by a civilian who just learned how to handle the hardware. She proceeds to defeat the queen with a glorified forklift.
Dropship: Takes Spunkmeyer and Ferro by surprise. They were never informed of what was going on.
If the aliens were half as threatening as they were supposed to be, everyone would have died. Instead, they run headlong into enemy fire and then get their ass handed to them by a civilian who just learned how to handle the hardware. She proceeds to defeat the queen with a glorified forklift.
Alien 3 was the first time I thought of them as a credible threat as it was going up against a violent prison population. Some of the deaths that do occur still are induced by obliviousness, though. Especially when
It grabs the guy with the flare, causing him to drop it so it ignites and sets alight the extremely flammable liquid that's coated everywhere. This conveniently cuts the survivors by half but they do end up capturing it. However, the alien is only freed from its trap thanks to one guy's insanity.
In Alien Isolation, though, your weapons are useless against it. This station was home to well over a hundred people yet this one creature managed to kill most of them and have the remainder cowering in the corners. It's clearly a very credible threat and one that demands respect. Even when placed toe-to-toe with people who are armed, aware and capable it comes out on top effortlessly. For this reason, I think Alien Isolation is the best depiction of the creature.