You don’t.
Just shoot him in the face with Megatron’s shotgun.

Okay, okay. Some of you were commenting on the previous post about having trouble getting DOTM Leader Sentinel Prime to stand. There’s also been a bunch of people complaining about that over in the feedback thread on TFW and I actually posted the fix for that on there a while back.
Still, I figured I’d talk about it here since there are a lot of posts in the feedback thread.