Most save editors simply allow you to type in "243" for trophies. This often breaks the game's internal logic, preventing the Riddler from appearing for the final boss fight. This feature repairs the logic rather than just hacking the numbers, ensuring the Riddler actually surrenders and the true ending triggers correctly.

| Issue | Solution | |-------|----------| | Trophy physically reappears after fix | Bit was incorrectly set to 0; re-flag and recalc checksum. | | Save crashes on load | Checksum mismatch; redo step 4.5. | | Counter resets after reboot | Game has secondary validation in profile.sav; sync both files. |

If manual hex editing is impractical, a community script (riddler_fix.py) automates the popcount and checksum steps.

Tools needed: HxD (free hex editor).

The Riddler trophy count is stored as a hex value at a specific offset. Here’s how to manually set it to 243:

Warning: Incorrect hex editing can corrupt your save beyond repair. Always keep the backup.