Here’s a clear and helpful write-up for a LEGO Batman 3: Beyond Gotham PC 100% Save Game, suitable for a gaming forum, save game repository, or personal blog.

Depending on your game version (Steam, GOG, or others), the save data is stored in different directories: Steam Version

• Full Character Roster: All 150+ characters unlocked, ranging from the standard Justice League members to obscure fan favorites like The Detroit Red Wings or Music Meister.
• All Red Bricks: All cheats are unlocked and purchasable. This includes multipliers (x2, x4, x6, etc.), invincibility, and the always-popular "Disguises" mode.
• Complete Vehicle Roster: Every vehicle in the game is available for purchase and use.
• Story Completion: All 15 levels completed on both Story and Free Play modes, achieving "True Believer" status on each.
• Open World Access: All Lantern Planets and the Watchtower are fully accessible and cleared of disturbances.

Backup your current saves: Before replacing anything, copy your existing files to a safe location.

"So I modified the file. I hid one last brick. A secret brick. One that no guide online, no cheat code, no walkthrough could ever find. It’s not in Gotham. It’s not on Oa. It’s not even in the game’s original memory."