This save file was created by completing the Steam version of the game, version 1.3.4, without using any third-party software.

The file contains:

All World 1 bosses completed on Expert difficulty with an A rating.
The bosses "Vegetable Gang" and "Tyanuk de la Grande" completed with an S rating.
All World 2 bosses completed on Expert difficulty with an A rating.
All World 3 bosses completed on Expert difficulty with an A rating.
All Endgame bosses completed on Expert difficulty with an A rating.
All Run 'n Gun levels completed with a P (Pacifist) rating.
All DLC bosses completed on Regular difficulty with an A rating.
The boss "Contra Gang" completed on Expert difficulty with an S rating.

Installation instructions:

Download the archive with the save file. Open the folder located at
C:\Users\{username}\AppData\Roaming\Cuphead
You can quickly access the Roaming folder using Run by pressing Win+R. In the entry field that appears, enter %AppData% .
Open the archive downloaded in step 1.
Drag the save file from the archive to the folder located at
C:\Users\{username}\AppData\Roaming\Cuphead, opened in step 2.
Agree to replace the files if a window appears asking what you want to do with the file.

Author: Dm-Gi