Corrected entry: After the Marines are attacked in the atmosphere processor and regroup in the APC, they surmise that Corporal Hicks is now in command. Wouldn't the pilot of the drop ship be next in line? Wouldn't she outrank Hicks even if she was only a warrant officer?
Corrected entry: When Ripley and the others are trying to figure out what they are dealing with Ripley suggests something is laying these eggs since there must be over 100. But she knows there already are hundreds if not thousands of these eggs so there is no reason to assume something is laying new ones. (01:34:40 - 01:35:15)
Corrected entry: In Alien, Kane refers to the eggs as "leathery objects, like eggs or something" but does not say how many. In Aliens, Ripley says in her deposition, "Kane, who went into that ship, said he saw thousands of eggs there. Thousands." After Kane comes out of his coma, he couldn't have told anyone about the number of eggs. When Dallas asks him, "Do you remember anything about the planet?" he just shakes his head no. (00:13:10)
Corrected entry: Not really a HUGE mistake, but when Ripley finds Newt in her hole the first time you can see lots of boxes laying round with rations or MRE's in them. But later when the female medic is checking her out she says she is suffering from "Borderline Malnutrition" How is that possible when she had so much left over food?
Corrected entry: When Ripley drives the APC into the station to pick up the marines, Hudson is apparently injured since Hicks has to practically carry him out of the alien hive and into the APC. But in subsequent scenes he has absolutely no trouble walking and his only injury seems to be the acid burn on his arm that he got after he made it to the APC. (01:17:10)
Corrected entry: Bishop tells Ripley that she has 19 minutes at the end when she charges off to find Newt, but seconds later as she walks out of the ship the computer voice says there are only 15 minutes left to get to safe distance. Both are computers that would be working from the same data, why would there be such a large discrepancy? (01:50:10)
Corrected entry: In several of the wide shots you can see the screens on the motion trackers don't have their normal 'radar' type displays, they're just blank screens with a blinking light behind them. Two such instances are when Vasquez and Hudson are searching the colony for a life sign (which turns out to be hamsters in a cage) and right after the aliens cut power to the colony. (00:39:15 - 01:36:25)
Corrected entry: In the scene when the marines are making their first sweep of the complex and Hicks says "looks like they bagged one of Ripley's bad guys here," how do they kill the alien? If they used weapons where are they? Why didn't the marines use them when the drop ship crashed and they only had four pulse rifles with about 50 rounds each?
Corrected entry: When the marines first arrive, the dropship lands for a few seconds, long enough for the APC to drive off, and no alien jumps on. When Hicks calls Ferro down again, we can see that the dropship is back in the transport's hanger. How did the alien get on board?
Corrected entry: As somebody has correctly pointed out in another submission, the hangar in the main spaceship is decompressing when the doors are open, and the draft from the escaping air is what causes the mother alien to loose grip on Ripley. How come therefore, when the doors are closed again, Ripley and Newt are able to breathe in the hangar? If all of the air inside the hangar was just expelled out of the airlock door, how come the hangar has air pressure? Admittedly, the hangar is very big, but the door is like 7 or 8 metres across, and the wind blowing is strong enough to push out the alien, so the amount of air lost in the time it is open for is massive.
Corrected entry: In the previous movie, LV-426 had a ring system around it, yet in this movie, when the Sulaco enters orbit, the ring is no longer there.
Corrected entry: When the Alien bursts in through the window of the APC after rescuing the marines it clearly sprays red blood when it smashes the window, even though the Alien has yellowish acidic blood.
Corrected entry: The crew finds half a dozen face huggers in the med lab, and two of them are still alive. One tries to attach to Burke when he gets too close to the glass case. If a face hugger was able to break the much tougher glass of Kane's space suit's helmet in the first film and attach to him, why wouldn't it be able to break through this less durable glass in this film to get on Burke?
Corrected entry: The marines are not allowed to fire in the reactor (which later explodes from damage caused by the APC with a 30 megaton blast), however it is described as a FUSION reactor. Fusion reactors do not cause nuclear explosions if they overheat. They can't. They just turn off.