Gungeon progression includes more than one apparent slot file. Copy the complete LocalLow directory so unlock/profile state and any backup generations remain together.
For this PC reference, the documented storage is Windows: %USERPROFILE%AppDataLocalLowDodge RollEnter the Gungeon. The known file or folder pattern is slot/progression records and backup files under the LocalLow game directory. Enter the Gungeon stores progression in a LocalLow directory with profile/slot data and recovery copies. Preserve the whole directory before replacing a slot.
Backup guidance: Close Enter the Gungeon, let the launcher finish any synchronization, then copy the complete documented save directory to a dated folder outside the live path. Preserve companion files rather than selecting only the newest-looking record. Cloud availability varies by storefront; allow synchronization to finish before comparing local backups. Launcher and cloud context matters because The active Steam, GOG, Epic Games Store installation determines which local profile and cloud copy can overwrite the save. Identify the storefront and account before restoring files.
Compatibility and recovery should stay conservative. Treat saves as version-, storefront-, account-, and mod-sensitive unless the game or a separately verified migration workflow proves otherwise. A similar filename or extension is not evidence that two releases are interchangeable. If the expected progress is not visible, If progress is missing after a restore, confirm the active Windows account, storefront/profile, cloud state, and exact directory first. Restore the untouched backup before experimenting with individual files or older autosaves. SaveEditor.com only labels a game-specific editor as available when a separate linked Tool has a verified operational runtime; this reference page by itself is not an editor claim.