It just means you'll do more damage the more loops you complete without having to start a new line. I wasn't sure how to work it, sorry I missed the mark!
OHHH so I'm supposed to not let go of the mouse button! Okay, with this information I was able to do a bit more damage, but the armadillo still spends too much time at the edge of the screen where I can't attack it (maybe my frame is smaller because my monitors aren't 16:9?). Love the music btw :D