Awesome game. The one problem I have with it is infinite energy. if you have enough lava it will never cool down and if you have enough metal then it can be used to create infinite electricity. Other than these flaws it is a great game
the fact that you can place caltrops and then not use the space for anything else if you change your mind is annoying. the enemy can remove them (while being shot at) but you can't.
would be nice if when your wall was at half health it would look damaged like the bastions do. It would make it much less time consuming for people who have little money and can't repair the entire wall.