It seems that past level 10 or so it doesn't get any harder. I'm currently at level 18 with 3340 points and all my "life" left. If I do lose a life point, I tend to recoup it durring the same match from a red egg.
I've got 2 hours to go before I have to leave work, hopefully it gets harder by then.
I've got 2 hours to go before I have to leave work, hopefully it gets harder by then.