Made it to lvl 175...but without lvl 15, not worth the time to be able to progress any farther. Devs...this is a perfect time to actually listen to a dwindinling player base...bring back lvl 15 diamond farming...or you will destroy the last bit of popularity this game has.
Max out your vampire girls base health regen, and put the rest of your points into your health attribute. Only do your base attack against the last boss(even on hard). He does additional damage when you are hurt. This will only work if you go into the last battle with full health. It's takes quite a few attacks but it is a simple and easy way to win.
ok the trick is -- the faster you get the shapes the faster they spawn -- so you gotta live on the edge and clean them close to where they spawn. It works just cleared 6.5 mill