The Chapter 2 Season 3 Week 10 Challenges were an exclusive Chapter 2: Season 3 set of challenges that were released on August 20th, 2020. The challenges were available to complete until the Season ended. The rewards for the challenges consisted of XP, however completing a certain amount of challenges allowed the ability to unlock styles for Battle Pass characters.
For completing most of the challenges up to Week 10, the Gold Eternal Knight style was unlocked.

Challenge Rewards
Search Chests at The Authority (7) 35,000 XP - Icon - Fortnite.png
Eliminations at Misty Meadows (3) 35,000 XP - Icon - Fortnite.png
Collect Fireflies from Weeping Woods (5) 35,000 XP - Icon - Fortnite.png
Dance on the Apres Ski dance floor for 10 seconds (10) 35,000 XP - Icon - Fortnite.png
Destroy shipping containers at Dirty Docks (7) 35,000 XP - Icon - Fortnite.png
Deal damage to opponents with Shotguns or Submachine Guns (500) 35,000 XP - Icon - Fortnite.png
Deal damage to opponents with Shotguns or Submachine Guns, (Recommended: 4 Players) (15,000) 80,000 XP - Icon - Fortnite.png

Chapter 2 Missions and Challenges
Chapter 2: Season 1 New World - Open Water - Forged In Slurp - Dockyard Deal - The Lowdown - Hunter And The Hunted - Trick Shot - Dive! - Chaos Rising - Alter Ego - Remedy Vs Toxin - Rippley Vs Sludge - 8-Ball Vs Scratch - Cameo Vs Chic - Sorana - Winterfest
Chapter 2: Season 2 Maya’s Challenges - Brutus' Briefing - TNTina's Trial - Meowscles' Mischief - Skye's Adventure - Midas’ Mission - Deadpool's Weekly Challenges
Chapter 2: Season 3 Week 1 - Week 2 - Week 3 - Week 4 - Week 5 - Week 6 - Week 7 - Week 8 - Week 9 - Week 10
Chapter 2: Season 4 Week 1 - Week 2 - Week 3 - Week 4 - Week 5 - Week 6 - Week 7 - Week 8 - Week 9 - Week 10

XP Xtravaganza Week 1 - XP Xtravaganza Week 2 - XP Xtravaganza Week 3 - XP Xtravaganza Week 4

Chapter 2: Season 4 Awakening Wolverine's Challenges - Mjolnir's Awakening - Thor's Awakening - Jennifer Walter's Awakening - Sapling Groot's Awakening - Groot's Awakening - Storm's Awakening - Doctor Doom's Awakening - Mystique's Awakening - Tony Stark's Awakening
Chapter 2: Season 5 Legendary Quests - Epic Quests - Rare Quests

Beskar Quests - Jungle Hunter - Operation: Snowdown - The Spy Within - Wakanda Forever Quests

Chapter 2: Season 6 Legendary Quests - Epic Quests - Rare Quests

Agent Jones Quests - Spire Quests

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