If you want, I can generate a step-by-step script to migrate saves automatically for Windows, macOS, or Linux — tell me which OS.
One of the most searched topics regarding the Symphony of the Serpent Save Folder Upd is how to unlock the final skin, "Obsidian Asp," which requires beating the game on difficulty 10.
Because the update encrypted the global_progress file, editors must now target snake_essence.sav. symphony of the serpent save folder upd
How to edit (Use at your own risk):
Warning: The latest Symphony of the Serpent Save Folder Upd (v1.2.5 beta) introduced a checksum validator. If you edit the file and the game crashes, you must delete the checksum line at the bottom of the JSON (usually "hash_check": "a3f...) or use the "Repair Save" function in the main menu. profile_SecondPlayer/
Backups/
When you open the Symphony of the Serpent Save Folder Upd, you will see three file types. Understanding what each does is essential for manual restoration.
| File Name | Purpose | Update Risk |
| :--- | :--- | :--- |
| global_progress.sav | Tracks overall achievements, card collection, and bestiary completion. | High |
| run_history.sav | Logs previous runs (Victories/Deaths). This file grows large over time. | Low |
| snake_essence.sav | This is the new file introduced in Upd 1.2.4. It handles the "Serpent Memories" (unlockable skins and starting perks). | Medium | If you want, I can generate a step-by-step
The "Upd" Identifier:
Notice that all new save files have a header line that reads "schema_version" : "1.2.4_runic". If your backup does not have this line, you will need to run the game once to generate a fresh save, then manually copy your old score data over.