Imperial Weapons are special Mythic weapons added to Fortnite for the Star Wars collaboration. During the event, you can complete various Star Wars-themed missions to earn extra XP and unlock exclusive cosmetics.
Hit opponents in succession further than 11 meters with the E-11 Blaster Rifle – Fortnite Star Wars Quest
The quest "Deal damage to opponents who are wielding an Imperial Weapon" is unusual in that it forces you to attack other characters while they are wielding said weapons. But there is an easy trick to completing this Fortnite quest. You can take advantage of it to investigate Imperial Roadblocks in different matches.
While you can complete this quest by attacking other players who happen to be equipped with Imperial Weapons, the easiest method is to deal damage to Stormtroopers. While they are not player-controlled characters, they do count as opponents for this quest. The best strategy for completing this quest is to go to an Imperial Roadblock with Stormtroopers early in the game.
To find Stormtroopers and get their E-11 Blaster Rifles, you'll need to head to Imperial Roadblocks scattered across the map. You can find them in the following locations:
