From Dallas getting mauled to Parker getting impaled, the character deaths in Ridley Scotts original 1979 Alien movie especially those at the hands of the pesky xenomorph are horribly gory. In the years since, the Alien franchise has explored everything in the genre space from high-octane action thriller to philosophical sci-fi epic. But Scotts original film is a mix of haunted house movie and slasher movie. Its an Agatha Christie whodunit crossed with a monster movie. And as such, its constructed as a series of gruesome deaths as the crew of the Nostromo gets brutally picked off.

https://screenrant.com/alien-movie-1979-deaths-ranked/