I'm no professional game reviewer, so take everything with a grain of salt.

The art style in this game is AMAZING. Falling into the rabbit hole of the worldbuilding, the concept art, and looking at the beautifully detailed maps and dystopian world is absolute gold and I highly recommend it. While this game may end up being a bit hard on your computer, you're in for some eye candy.

The game's early access nature is obvious, but this game is still higher quality than most AAA titles on release.
I've encountered some minor glitches and the movement system took a bit to get used to, but the recipe is here for an awesome, addictive gameplay loop.

Even with the best weapons, there are still enemies you can't confront, and you're still one stroke of bad luck away from losing that big pile of hyper expensive gear you're lugging around.
If you do choose to stand and fight, the chance of victory is very slim, but at the same token if you win your brain gets a big dose of happy chemicals.

My final thought on this game, PLAY WITH FRIENDS! The dynamics of solo play vs multiplayer are hugely different; Solo, you need to sneak around and not get seen knowing that one mistake means the mission is over, whereas with 2-4, while it's easier to win firefights it's also harder to stay hidden, making for some awesome moments in-game.

Should you buy this? Absolutely! Should you play this? Yes.
Can't wait to see what further polish and development time gives to this game. I'll be on it for a long while.

While I don't really know about the premise, storyline, or anything like that, what I will say about this game is that it FEELS good to play.

The way the gunplay works and the way the PVP and Expeditions play are both excellent, lots of fun.
Nice and casual too, you don't have to grind the game too hard to enjoy the whole experience.

This game is god tier, and it's for everyone. Pure beauty. Five stars.