I am also terrible at pvp. I did the Last Word part about a week ago after sitting on this quest for months thinking I would never complete it, especially after the nerf in the last update. Turns out I was able to complete this part in about 24 hrs of dedicated pvp play. Here's how I did it: 1. I NEVER equipped the Last Word during the match at all until the very end. Only if it was certain that we were going to win, when Shaxx would say "one final push to victory," only then would I equip it. 2. Once equipped, I would activate my super (storm trance) in the final moments and try to get a kill spree with Last Word equipped. In this way, I would get at least 3% for the win and often up to 7% with the super kills and the win per winning match. Because I lost as many matches as I won, I could only use this method 50% of the time, but it was a guaranteed positive net method. Others have also equipped Last Word in the middle of the match during heavy round or whenever their supers presented, which could further accelerate the process, but I didn't do that. You can do it. Good luck!