I picked it up yesterday and played for a while last night.
My squads got brutalised every way imaginable.
In one mission, I had to evac a scientist. I discovered the hard way that you lose anyone that isn't in the evac zone when the timer is at 1.
I seemed to be losing a soldier in each mission, and having another holed up in the hospital for the next 3-4 weeks. At like my 4th or 5th mission, I was back to using all rookies again.
The last mission I played last night involved an unfortunate incident late in the mission, with a lizard thing and two stabby dudes. 1 soldier incapped, 1 unconscious and a 3rd panicked. My poor sniper tried his best, but to no avail.
Game over man. Game over.
I'm going to start a fresh game tonight, now that I know a little more about what is going on.