I like the concept you were going for here! It reminds me a bit of an old Flash game about running over zombies. It was really satisfying to coral a large horde around a block and pick them off. I realized because of the drag from running one down that I needed to tackle only one at a time to keep up my speed but I have to admit I wished I could run through a large horde at full speed and survive. Still a great arcade experience though!