Fun
Addictive to a point, since I replayed a couple times before I started reaching the battering rams. It seemed like the difficulty leveled off for a few rounds, and would suddenly spike. My 2 turrets and 4 mines were still unnecessary until I hit the level with the rams, and then I suddenly went from 100+ health to nothing in less than 30 seconds. Fun game, but maybe balance out the difficulty levels a little bit :)