First time playing. I played on a controller and the tank and helicoptor controls were very intuitive and I've picked up their movements up quickly and finished their scenes first try. The jet took a little while to get used to but and I had to devise a tactic to destory the tanks without being destroyed myself but I was able to complete the scenario after a few attempts.
For me I really like the art style you are going for. I've seen some of the pictures and videos you have posted and I'm glad to say it looks just as good to play as in the screen shots.
I suspect the jet movement is still a little work in progress as it can bounce on the floor, fly out of bounds and I even got it stuck in a house.
Criticism is difficult on this one, I assume they'll be missions coming and more structure to the game. I'm looking forward to seeing more content