Slow, boring, and devoid of any soul and fun that made other games like Fallout great. UI is terrible, I turned the music off after 5 minutes, and other sounds are a pain to hear too.
You just need 5 minutes to tell if you'll like it or not : options are not even explained ( what does "Unobscuration Alpha" means ? "SCT duration" ? "Time between"... time between what ? ) and the tutorial gives you a gun and tries to teach you how to sneak... and that's all. Well guess what ? I did a Psi character that sucks with guns and stealth, and I don't have a single Psi ability... took me 5 minutes to kill a bot with 40% hit chance with the gun at point blank, and I would have died 100 times if the bot didn't do 0 damage.
The stealth system seems downright stupid and useless, as you can't see anything before it's in your direct line of sight, which means that you don't know what's around the corner and can't plan your moves, or know where the ennemy is.
The number of flaws during the first 15 minutes of the game are enough to make you want to quit. I bought it in EA to support the devs, thinking it would get better, but nope. Now I'm stuck with it and can't even get a refund.
Proof that a good game is not just a bunch of code holding graphics together : it needs a soul and a personality.