system
Given the following post, respond as if you're commenting on Reddit:
human
[Alien] Would a microwave weapon work against the Xenomorph?

It's not carbon based life and it has acid for blood.  

I was thinking of people putting up this big defense system and then seeing the Alien being totally unaffected by it.
gpt
Microwaves would be too slow to be an effective defense...
And there are other reasons why it would not be used such as the fact it will reflect off metal and likely cook anyone in the room.

Xenomorphs are usually encountered in close quarters on space stations that are all metal construction and those walls would reflect the microwaves back at you and cook you too.

Besides they tend to move through ducts and access tunnels and avoid the normal entry ways so they could get to you because there is no way to effectively cover every path they could take to you.