Simple but entertaining
Like the style of this game, but its no development in it. Give cash-carries over, upgrades and harder mobs :)
I did the game first time with ease, tried it again and realised why..
You dont really NEED any troops in this game (except on the last map and the ones with the hellspawn, he hurts), but of course, they speed it up a bit. You can beat the game almost entirly by just placing yourself in the middle of the "zerg", so you hit both enemies and peons, and just stand there with "shift" and "space" held until every last enemy is dead! On bossfights, just go through the boss, and beat him from behind til hes dead.