I’m probably one of the biggest fans of the game on this forum - and I would advise you to wait.
I was planning to buy this for my best mate for Christmas, but it has so many balancing issues and the difficulty spike is so punishing that I don’t think he’d enjoy it at the moment.
It is going to be brilliant - once they’ve ironed out the wrinkles - but it’s nowhere near there yet.
That said: I’m playing it every spare hour I can possibly get, and frankly not doing other stuff I should be doing because I find it so addictive. I love the game as it is, crazy difficulty and all - but then that’s what I signed up for. I was one of the strongest voices for nerfing some of the more OP Squad Skills in the BBs because it made the game far too easy - and I still refuse to use some of the cheesing tricks players have posted on these forums (Sniper Rage Burst & 100% Stealth Infiltrators immediately come to mind).
So… no gamebreaking bugs that I’ve encountered, but only try it now if you like your games HARD.