I just wanted to share some of my campaign notes for new gms. I feel a lot of people are making the mistake of thinking that this game is limited to the movies. Which means after a few cinematic scenarios with aliens, this game ends up on the shelf. This universe is way more interesting and expansive than most think.
The main thing is to have xenomorphs be extremely rare. The campaign I did was the players escape from a colony prison and stole a modified bison ship with armaments. From there, it was episodic sometimes doing dirty work for corporations, smuggling, getting attacked by pirates, and very rarely seeing aliens in ancient ruins. I hope this idea helps some newer GM's and those who limit themselves to the movies. It was a lot of fun.