I have gotten to the 2nd boss in this game and I can't kill him. I viewed a vid on U-Tube that shows the player being able to target the boulder the Skinwalker holds above his head to throw at you. Well I have tried everything I can to target that boulder, I cant so I can't kill him. The boulder needs to drop on him to stun him. One should be able to use surge or lift to do this. One then can kill him with another power. Help need!

What I always did was charge up a Surge attack, and when I lifted the boulder I would run close to him and release it. He would invariably drop the boulder. This approach does not require you to target the boulder, you just need to be close and facing the monster's knees.

I think I have tried this, but I will try again. Thanks.

I have tried this without any success :(

It it a timing issue ?? Did you manage to do this ? did it work ??

I had this same problem. All the walkthrus I saw said to lift the boulder to drop on his head. Tricky to do when you can only target the boulder about 10% of the time. Spent ages trying to do this, then read this post and had him killed 5 mins later.
Charged up surge, then melee. Repeat