Played about 4 hours of it. I'm not sure what I was expecting, but it's an MMO just like Destiny. I was kind of hoping it'd be a little more innovative, and whilst the dark zone bits were kinda fun with friends it all comes back to the inevitable grind for better DPS over legitimate strategy and an actual skill curve like some of the other multiplayer survival RPGs out there.
It'll be interesting to see what they do with it, but to me it just seems like another MMO time-sink and that's not what I'm after. I just thought that worth mentioning because it's the reason why I paid a little more on that Humble Bundle for a beta key: To see if their initial trailer was true to it being more survival-y and with an emphasis on cautious PvP and PvE, but it isn't - the enemies are bullet-sponges, as are the players. It's unfortunate because it does take you out of it when it takes 10-20 headshots to kill another player with the assault rifles, and it's hard to suspend disbelief at that point like with games set in the future with space guns and shields and the like.
Also, whilst the graphics are clearly better than the Xbox and PS4 versions, it's still been downgraded visually. That was a bit of a pity too because there's no excuse for client-side detail to be lowered even in an MMO. It is Ubisoft though so to be expected I suppose.
Won't be buying, but it seems like a solid MMO if that's what one's in to.