This past weekend I just soloed death surge and ghost of the scrap yard. As said you want to keep tar patch down spam twilight grasp as much as you can and use howling twilight as soon as it up. Also did my first timed pylon run and timed it at 3 minutes 16 seconds. Main thing to do is get provoke and put it on auto to keep the focus on you. I was able to floor Death Surges to hit chance. Also, death surge is very annoying to solo.