Well, I got to play the game for a bit on Friday and Saturday, only for Steam to suddenly start giving me errors and not let me load it up any more. Still, it was definitely very fun, though not easy by any means. Lost my first couple of C/I attempts (once through underestimating the tightness of the turn limit and getting my entire team left behind...) but I seem to have gotten going OK on my third. I'm a couple of months in, I've gotten the second teir of weapons, and the armour is researched but I'm broke so haven't actually unlocked it yet. Haven't lost any soldiers, though I don't think I've had a mission without at least one injury. One failed mission due to me blowing up the objective which cost me a point on the doom timer, though I got everyone out. There were a few graphical glitches, and the overall performance isn't great [especially the load times: it takes the best part of a minute to load and unload levels - the former I can somewhat understand as it has to procedurally generate the map, but the latter confuses me] but nothing that affected the mechanics, up until the game decided not to play at all.