I myself have "since the beginning of time" all time UFO Games XCOM or gambled. The other remakes which gradually came.
Yes, of course I would have liked that the game is more than just a shooter. But nevertheless it is a very nice game, which is located in "XCOM universe". The story is not bad. Ok, that constant running around the base was doing something on my nerves. And as I've gambled through the second time, I have all the dialogues just clicked through, because the dialogues for the game are important. At least gamble at the second time. Please read When first time, simply because of the story :)
The difficulty was not high for me personally. The first time with the second highest level of difficulty played. Felt like "normal". The second time in the heaviest mode played. Something more challenging, but doable. Did the fighting but have to repeat often noticeable. The also tell me about the most. A fight against a Muton or later Elite Muton is a bit challenging in the heaviest mode :)
But more than the 2x I play the game is not well. But hey costs, also do not have much. Here at Amazon around 12 euros, scarce at other online retailers 10 euros. Is perfectly ok for the few hours that you need already.
On the whole it pleased me very much except for the one or other point of criticism and can recommend it.