This looks awesome, man!
I must admit that during the first few "start a new campaign" moments, I had absolutely no idea what to expect. And it turns out it is amazing!
I got killed off easily (night missions, flares didn't do me much good) in the jungle with a two-man team.
After I figured out I could get a four-man team with a van, things started to go a little bit better (a later game, I lost the first two/three as I didn't do anything but run around being amazed by the new (very dangerous, at least on superhuman difficulty) and weird Strange Creatures.
Also, I love the fact we have more than just one gun to choose from in the beginning. Having slightly different alternatives makes for good role-play. I could give soldiers their "native" guns, for starters.
Nice idea with the flag, by the way. I hope you get it for all nationalities in the not so distant future. I must admit I like it so much that it is a letdown when I hire a soldier with no flag on the soldier-screen now.
And those...
...are crazy numerous. One of them is too easy to handle, but I experience them just swarming towards the van in such huge numbers, even my four-man squad is unable to take them out quickly enough. I still haven't managed to get one of those corpses back home (I've had to just abort after shooting down three/four in the first few turns).
I have only experienced a crash once. Unfortunately, there were no game-crash screen. So I don't know what caused it. And since I haven't been able to reproduce it, I'm in the dark about the reason. Probably not a runtime-error. I think Windows would warn me about that, if it were the case. I'll see if I can make it happen again, but I doubt it.
In short: I die A LOT!
From what I've seen so far... I LOVE THIS MOD!