Difficulty in the campaigns is all over the place, some missions are insane, some are super easy, usually in that order. I had a couple of issues where you get the objective to get to the point X, the game never tells you where it is.
But I like it.
It's gameplay is a mix of XCOM and WW2 with surprising attention to details, such as physics, weakpoints on tanks and enviroment destruction..
For example, once I ended up having to fight a heavy scout car, that was impervious to small arms fire. Ofc I had no AT weapons, so I hoarded a bunch of HE grenades on one guy and spammed them at the scout car to see what happens.
It's tires blew up on one side and the moment the last tire flew off, whole vehicle flipped over to that side, rendering it useless.
Buildings can be destroyed in a manner similar to Battlefield Bad Company 2, but much simpler. You can colapse them with tanks and most armored vehicles, sometimes a really too tactic to surprise attack a tank is to move behind the building trough which the enemy cant see you, boo! You're within 20 meters of the tank (preferably the backside).
Even though it has its flaws and the resolution support is a bit wonky, I have never played a more complex and realistic WW2 RTS. And yes, I have played CoH 1 (much simpler vehicle system) and 2 ("butthurt" button spam) and neither come close to this game.
8/10 - Had to take off some points for horrid voiceacting and badly done campaign. But the gameplay itself is stellar. Just take note, some key's cannot be changed (use macro keys on your keyboard for these) and the default keybindings aren't meant for a human being with two hands.