Unlike a save editor, a poorly coded unlocker can write null values to your perk tree. Numerous forum posts on Undead Labs detail players losing their legitimate level 999 progress because an unlocker overwrote their profile with corrupted data that couldn't be rolled back.
: In a popular "legit" workaround, players discovered they could play DLC missions for free if a friend who owned the content invited them to a private co-op match. The Rise of Unlockers : For solo players, third-party tools like ScreamAPI (Epic) SmokeAPI (Steam) World War Z Dlc Unlocker
: Some games offer a season pass or a subscription that includes access to DLCs as they are released. Unlike a save editor, a poorly coded unlocker