First, we don't know your ninja list, 2nd I doubt you can beat it at 32k, probably at 45k but not 32k.

Forget about pass that instance with 3 shirukens you won't be able to do that.
I did when I arrived to 45k power.

In the top left of your game screen, you should be able to see a red box with the words 'Power Up'. Click it, and raise your bp before trying again!

A lot of the blue circles are very hard to beat unless you're above average bp. Good luck!