The harpoon gun is an interesting weapon in Fortnite as it has many uses but using it for eliminating opponents is not one of its best. This is due to the fact it only does 75 damage per hit and can only be used for 10 successful hits with no way to replenish ammo.

The team rumble game mode is a good choice to progress with this quest for a few reasons. If you have a harpoon gun in your inventory when you are eliminated you will respawn with a harpoon gun with 10 shots. You also have the ability to drop in close to the enemy team and get off a few shots if you manage to take them by surprise. You are also more likely to find an enemy player who has already been damaged as this game mode is more fast paced and people don't generally heal. This is even more likely in the later stages of the game when the circle is small and the fighting is intense.