I liked the game. Was a massive fan of the original X-COM which made me go into it thinking it was going to be like the all the other "remakes" of the series, which totally sucked.
However, I was surprised to say the least and they done a very good job at remaking it. The base system was nice, the researching was pretty damn close the original and the manufacturing was cool. Simple things like guns done instantly but aircraft parts took longer. Awesome.
However, I couldn't help feel it was "un-finished" the game is pretty short, can complete it in a day if you just rush it.
The original X-COM you would be lucky to be 1/4 way through the game in 3 days rushing it. So I think they sort of got lazy and ended it too soon. However, the ending to the game was good, the narrative story was nice.
I really like the whole ranking of soldiers and whatnot. Is pretty cool. As I do with all X-COM games I end up getting attached to 1 or 2 certain members and do everything in my power to keep them alive. My sniper has been on every mission she can, starting from the very start
The combat system is ok, bit buggy at times with the shooting phase sometimes prolonging for a while, nothing major and the movement is quite cool. The whole sprint thing is nice feature. As well as medium / full cover.
I guess to wrap up this wall of text I will finish with,
TL : DR The game surprised me keeping pretty close to it's roots, but few bugs and unfinished/lazy story sort of annoyed me. Overall the game is amazing and I would buy it again, but I think I will not replay it until some DLC is released.