Lost the server 4 times today, the problem was every time at a crucial point in the mission when I was fighting the boss.
I am aware it is a Beta, but I still feel a bit disappointed. I am only at level 4, so it may get better, but at this point I prefer TD1, but then I am used to that.
Not bugs, but lots of little things, like I seem to stick to cover when I am trying to leave, yet not stay in cover when I try to face the other way. At times the NCP,s move way too fast, though that could be a server problem as my internet speed is high.
Anyway, TD1 has been well tuned by now, and I expect the same will happen to this, but at the moment I cannot get immersed in TD2 as I do in TD1.