Loved it!
Very stylish graphics, great level design!
I love the fact you can keep placing stuff while the tank moves, it makes it very fluid!
I wish there was a way to move things already placed!
In fact you could probably do away with the lives entirely, and just have the tank keep respawning. That way if you can move things around, it's just about trying different things until it works, all in one fluid run!
The music is very nice :)