Aliens: Fireteam Elite is a nice, fun, little Aliens game that will keep you and two friends decently engaged for maybe 8 or so hours. You'll probably enjoy your time with most of it. But unfortunately, that's just about all there is.
The main combat is mostly pretty fun, depending on who and what you're fighting. When fighting the Xenomorphs, gameplay will either feel really snappy, almost like a shooting gallery; or, decently engaging when you're dealing with the tougher armored enemies.
And when you're fighting the synthetics...well it mostly just feels like a worse Gears of War game. Which can be fun at times, but the game does very little to improve upon the generic third person combat beyond that.
Literally every encounter is just a survival/wave defense with only a couple small changes here and there. It's fun at first, but grows to be boring and monotonous very quickly by the time you get to the third campaign.
The story is also violently uninteresting. It feels more like a set of excuses for why you have to kill aliens, instead of just throwing us in to kill aliens. Honestly, I think the game would have been better off if there just wasn't a story mode at all and the game was just built around you killing aliens and upgrading your gear. Imagine something like Deep Rock Galactic but with a more intense focus on alien killing.
I think this game's biggest problem is that it can't decide if it wants to be a live service game or not. It toes the line straight down the middle. It has stuff like daily and weekly challenge rotations, a huge focus on online multiplayer, and plenty of rewards and skins to unlock or buy.
But the thing is, it just isn't enough. By the time you finish all four campaigns, there just isn't really a motivator to bother playing the game anymore. Which is weird, since the game seems to pretend that everything is just getting started then. So many modes and difficulties unlock upon completion of the fourth campaign, but it just doesn't feel like something I want to do. Why would I bother sinking more time into this when the entire game is literally just nothing but a less engaging version of horde mode from Gears of War?
I don't know, maybe I'm being to hard on this game. I had plenty of fun with it, but I think most of that came from playing with two of my friends the whole time and joking around that we were actually low-level soldiers in an Alien movie. I couldn't imagine playing this by myself, I think I would have given up before unlocking the third campaign.
Anyway, a nice game that can be fun if you're with friends, but there's not much else too it. It's better than the last Aliens game (Colonial Marines) but nowhere near as good as the most recent Alien game (Isolation).
If you want a fun little game to distract yourself for a bit, this is right on the money. Just don't expect much, or really anything, more than that.