I can provide step-by-step troubleshooting to get your save working perfectly. Share public link
| Issue | Fix | |-------|-----| | Save shows as "Corrupted" | Wrong game version (ensure Repentance DLC is active). Delete options.ini in the same folder and relaunch. | | Progress partially unlocked | You overwrote only slot 1 but missing rep_persistentgamedata4.dat . Restore backup, replace all 4 files. | | Achievements don't unlock in Steam | Use – but risk of ban (very low for Isaac). Or simply re-earn one achievement to trigger sync. | | Triple Dead God not showing | Some saves are single-file Dead God. Look for "Triple Dead God" or "3x Dead God" in filename. |
In Repentance , a true 100% completion file is marked by the achievement on the title screen. Downloading a complete save file immediately grants you access to the entire game's sandbox:
[ ] 1–45 (ensure #34 and #43 are marked).
C:\Program Files (x86)\Steam\userdata\[YourSteamID]\250900\remote Step 3: Back Up Your Original Progress
A crash usually indicates a conflict between the save file and installed mods. Turn off all mods via the Steam Workshop, launch the game with the clean save file once, and then re-enable your mods. Balancing Mod Use and Achievements
Because Isaac has a dedicated modding community, finding a safe save is straightforward. Here are the trusted sources (as of 2025):