This game is pretty good, tank controls are hard to get used to but it's a nice challenge overall.
I would like to report a potential oversight I think was not intended to happen (simplified so there's no spoilers) : In one of the rooms of level 3 where you get introduced to a new obstacle in the game, the door that's supposed to lock you off from the previous area doesn't have collision, giving you a chance to just walk away. Of course, I still beat it the intended way, but I just wanted to point that out.