I got the behemoth costume and started the "accumulate 100 ws" event. I accumulated 23 points in a few tries, but after the next try, i got the following message:
Final Score: 1 point.
0 points earned so far.
You have achieved rank 422258500
I thought it was a glitch and tried again with the following result:
Final Score: 1 point.
0 points earned so far.
You have achieved rank 422258729
Something seems really broken at this point to me...