Yeah, I'm having like a god like run right now (actually since yesterday, have it open in the background).
am currently at level 154 or something, but basically I cant die anymore since those turtles jsut die before they can even touch .
Only reason why I am not further is cause I have to switch back to the game every now and then and click an upgrade.
and my notebooks fans running pretty wild, so dont wanna risk it shutting down due to heat.
but basically could get any score I want with enough time.
if you reach level 60, you have basically made it :-)
Edit: I'm currently level 338 and still counting :-)
Still seem to have 1 ability left to get though, luck wasnt on my side yet to have it offered