Thank you for the feedback! I did come across with the "go in circles then kill everything" approach when I was playtesting it, but i didn't feel like doing much about it because it was really satisfying... Though I did add the difficulty system as an option to mitigate that strategy's usefulness (higher difficulties just shorten the rope), but maybe that wasn't enough. I thought about making the orange enemies spawn before the purple ones, but never got around to it. If I keep working on this game after the jam, I can play with the enemy spawn rates and speeds and stuff to make the harder difficulties more difficult for the hardcore gamers.