I stretched out my first gameplay so i cannot tell you how long it will take for the other player.
XCOM:EU is a fine game but not the hardcore tactical XCOM experience i wanted. There are many things which is good about the game, the graphics is not bad, the cover mechanic is fine and the tension of the game is well maintained. But as i played the game and finished i kept thinking how much more awesome this would be if it was not targeted towards the Console crowd. How an expanded Science and Engineering tree with specializations would add so much more. How a larger map and tactical interface could be so much more interesting etc etc
as it is, it is Alien fight with XCOM name , a lightweight and fun Consolized version of XCOM. Which is fine in itself. And recommendable but it is NOT the XCOM experience i wanted.