Originally Posted by Heart Braden
You don't necessarily have to grenade him OR use the torque bow on him to get the Kryll off of him. They leave him automatically, so my advice, (and what I did) is to just take cover, wait for the Kryll to leave him, and then pop out and get as many headshots as you possibly can, before the Kryll go back to him. Once he gets too close to you, Roadie Run to the other side of the arena, and repeat. It worked for me on Hardcore the second time I tried.
nice but u might need the torque bow because when the kryll leave him they come to try to kill u but if u use the torque bow the jus fly in the air and u could get a couple of head shot on him.