ALIEN: Isolation

[Cuyir]

If my understanding of the weapon mechanics are correct, they are just defensive weapons and you won't be able to kill the Xenomorph till the game lets you (if at all).

The wrench is going to be used for environment interaction and to add to the atmosphere. If you are cornered you will probably have the gameplay option to whack it with the wrench before dying. So it's a sort of a useless last stand weapon which some players use before dying haha. At least that's how I see it.

The Flamethrower will probably work like it does in the movie so HorrorElementFilms has it correct. Flamethrowers are short range weapons, so using it from afar will make you known to the Xenomorph while doing nothing to make it go away.