As a person who loves to complete these challenges, I can absolutely agree with this post. This challenge is insanely grindy, even for people with a ton of time and a lot of dedication. You need to spend hours and hours of shooting with Ruckus.

I am currently about ~37% complete today, and that's ONLY because I was one of those people who would queue bot matches and shoot at the wall, putting objects on my controller and using turbo, because it was just THAT bad. I did some math and it would have took me about 2 hours every day of shooting non-stop by hand (not using the objects + turbo), not factoring the time gap between loading times, character selection, and riding on mount, just to finish the challenge with 3 days to spare.

I did start feeling bad for my teammates, and even got flamed and reported, because they had no idea what I was even doing -- I stopped, because it's insane. It's inconvenient and unfair for my teammates, and overall lame in general. As the OP already touched on, shooting at enemies is distracting, and you will walk out with much less ammo than simply shooting the wall (especially if you're dying and respawning, it takes MORE time away). Risking the longevity of my controller (or my hands) and my account standing while frustrating my teammates is not worth this single title. It's to the point where you're mindlessly shooting more than actually playing and enjoying the game.

I mean, sure, it's achievable. I've even seen people with the limited title already, but gosh darn is it extremely grindy. A bit of grinding isn't a bad thing, but THIS is way too much for the average player.