Fighting Sci-fi cliches

Hi!
So i'm working on a Sci-fi story and I was wondering if anyone would point out some cliches from other stories in the genre.
Thank You!

Or things you notice that most Sci-Fi stories have in common.

I'd make sure that you do kill enough characters to make the antagonist seem dangerous. Main characters too, most sci-fi novels only kill extras.

Okay thanks! That's a thought.

Also, what are some things you like most in Sci-Fi stories?
I love the variety of aliens and planets. :)

Same, do you count dystopian fiction as Sci-fi?

Sure, though I prefer space Sci-Fi.

Sometimes cliche is good. And plus you can give it an eerie retro feel with classic space ships and aliens

True!

try puting some subtle references to classic sci-fi shows/movies

Never enough weaponry (lazer guns, shields, cannons.) Usually the more primitive the more interesting.
I.E. sword = Lightsaber

Any kind of fast-travel system in space.
I feel this is a cliche that has a ton of potential but is always simplified to "It takes you anywhere unless the plot finds it inconvenient".