Badge is not working for me either. I must have played through like 12 times now. Tried different browsers quality settings and everything... wish Kong was faster at responding reports. Nice game though.
Pretty neat game I enjoyed it. Some tips to getting the hard badge; You can change mouse sensitivity in the options menu along with image quality. I personally found 'simple' to be the best. As you progress, you unlock speeds you can start at. Saves time getting hard badge by starting at 900 over and over instead of the beginning each time. :) Good luck.