This week 11 epic quest requires you to eliminate an opponent at a distance greater than 25 meters.

There are a few weapons that perform a lot better at longer distances than others. Bows and mechanical assault rifles are very effect over longer distances than shotguns and submachine guns.

I'd recommend getting a mechanical assault rifle. The higher the rarity the better. These are good at long range due to the higher damage and greater accuracy.

If you prefer a bow using a mechanical bow, mechanical explosive bow or mechanical shockwave bow can be good options as well.

Once you have a good weapon in your inventory you need to find an opponent to eliminate. Not much advice to give you here. Just play the game and you will come across another player in the distance. Team Rumble would give you lots of opportunities to pick of enemy players from a distance. Especially near the end of the game when the storm circle is small.