when you first see him slow down time so you can get behind him then attack his feet. keep
doing this until your guy runs up his back and you can do a speed kill. once you stick the
dagger into his neck you will be in control of him. make him go through the big doors in
the arena type place and guide him through the obstacles. MAKE SURE YOU DO NOT HIT THE
WALLS TO HARD

I dont know if attacking his feet and using a speed kill to control him works like someone
else suggested but i knocked him off the edge of the platform. That worked too.

what kind of obstacles was that? i always control the rock monster inside the big door and
round at least twice then hard to control it will hit the wall then i die........