Oh im glad you liked it. Looks like youve played longer than me XD
What can I say, I was enjoying it.
Just FYI when you are that high there is a VERY large group spawned in the middle by that point.
Also I forgot to mention you might want to increase the attack rate of them somewhat I found myself very rarely having any bones thrown at me. Don't increase too much just a tad to increase the difficultly but not take the fun away.