The game mechanics looks pretty cool.
I'm assuming these graphics are place holder and you are going to improve them ;)
Regarding the game mechanics, I think you need to work on the strategic part. It came to my memories games like Rainbow six (the 1998 one). You needed to set in the strategic map all the instructions of each member of the team. The equipment/weapons, where to move or wait, where to attack and how they attack.
In my opinion, there are only a few instructions, and you are not taking advantage of this cool mechanics. This is a key point of your game. Maybe I miss some of them (they are not easy to find) and I recommend you to do a better tutorial to explain them and take advantage of all game features.
I would love to see cover mechanics, ambush, different kind of soldiers (artillery, assault, sniper...covering different strategical needs), thermal/zombie view and other tactical mechanics.
I love this game and I will put an eye on the project.