If you want to save your progress or transfer it to another device / PC then this guide will help you.
Game Save File Location
Your Enter the Gungeon save files are located in the following folder:
- %USERPROFILE%\AppData\LocalLow\Dodge Roll\Enter the Gungeon\
MacOS (OS X):
- $HOME/Library/Application Support/Dodge Roll/Enter the Gungeon
- $HOME/.config/unity3d/Dodge Roll/Enter the Gungeon
Easy Way: By holding down the Windows key and the R key at the same time, or by using Windows Search, launch [Windows Run]. Then enter the URL above, then click OK.