Stay away, simple as that.
The game itself after almost a year of development has gone basically nowhere. Same three bots since the begining, looting system is currently a chore to pick up anything that's inside a box/bag, game lags on lowest settings possible, in the dark sections of the game it's basically pitch black even on the highest brightness settings.
The Hunter is broken, always has been. In the begining it one shot you and could detect and walk through walls. One year later the only change is now it takes two shots to kill you. With how the damage system works the more damage you take the less mobility you have. One shot takes you from 100% down to 18% essentially crippling you. Leaving you to wait to die or take an hour to find a repair station to fix the damages. Personally I liked it better when they insta-killed me instead of me stuck there waiting to put the second bullet in me.
The Kamikaze bots are stupidly easy to deal with. They walk slowly, stand in place to explode, and take five seconds to explode. Making it insanely easy to just walk up to them to activate their self destruct and then casually walk away.
The Hives I don't know if they've been changed or not because I kept getting shot down by Hunters before I could get anywhere near one of their nests. They're insanely hard to shoot down and hack considering their high mobility.
Overall they can detect you before you even know they're there and you end up just getting gunned down.
The loot system is rudimentary at best. picking up individual loose items is a breeze but picking up items in boxes or bags is time consuming and grating to grab items out of. Oh by the way the ammo comes in a box that you have to open first then take the ammo out of adding a needless step to looting. When grabbing items from a box/bag you have to click it then select the item then take an amount of said item. There is no double click to grab the whole stack or singular item. Items now no longer come in completed products. You now have to go out and find the seperate parts to craft said tools to do anything.
Melee weapons are a joke in single player. Good luck getting close enough to whack a Hunter to death, the Hive Drones are out of the question, and "Why would you even?" with the Kamikaze bots. Guns now need to be built which is the only way to effectivly defend yourself against the Hunters and Hive Drones. So have fun hunting down every single part. Also you can't break down items into their base components or continue to craft on an incomplete item. Making anything you've finished crafting with only the parts you had effectivly useless.
Hacking is overcomplicated, if you don't know coding before hand you're going to be referring to a guide before you memorize the basic commands (if you can even stomach playing that long).
I like the power system in this game, you need capacitors to store charged up power and you need reactors/solar panels to generate power. The more weight you carry the more energy you consume. If you run out of power you have to slowly waddle around or stand around a bit to generate some more power (unfortunatly you're not going to be able to stand around much). The jumping system sucks, let's just sit here for two minutes while I charge up my jump to get over a two foot high ledge. Basically making jumping a chore and something to not bother with considering most of the map is flat anyway.
This game is terribly optimized. It lags on the lowest settings possible. The brightness setting literally doesn't even matter for it does basically nothing for the pitch black sections of the game.
After all of this my only advice is never buy this game or wait for another year to see if something significant has been done. After a almost a year in development this game has basically gone no where and it won't get anywhere fast. Just avoid the game and find something else to buy/play.
(Edit) The reason I have 16 hours on this game is because when it first came out the game had a fun masochistic challenge to it, even though the AI had quite few advantages. In the beginning we had a little thing called the RFID Tracker. It allowed us to see enemies on the map due to their RFID chips installed. So you could effectivly avoid enemies before they could even auto lock onto you or run out of the range of their auto lock before it was too late. The PvP aspect had you set in teams of two to survive against three other teams. Unfortunatly when the PvP was first introduced you couldn't win with your partner being alive, it was coded to be last man standing. So you either ended up murdering your team mate in the beginning with the basic tools given to you or have a battle royale at the end. Game was fun at first but with nothing new to up the anty, fix issues, or add more interest to the game it gets dull and repetitive.