Ripley destroys the Nostromo after learning the company wanted the alien, but the xenomorph survives aboard her escape ...

The ending of Predator shows Dutch surviving because he finally stops fighting the alien like a normal enemy. His team enters the jungle with guns, explosives, tracking skills, and command experience.

Let's face it: most sequels don't stack up to their original counterpart. Thankfully, these sci-fi sequels actually did ...