HAHA! I'm putting you on the leader-board right now.
I apologise for the music bugs, the zone for the music is small and for the music to trigger you have to be looking in his direction, so there will be times when you see him but not hear the music, depends on your distance to it too.
Also, The way to counter Saberbeast is to not sprint to only swing your torch when absolutely necessary. He hears every noise you make.
Just like the Horror Tooth vid it was incredibly entertaining!
Cheers, And thank you for completing the challenge.