How to unlock all costumes or weapons and change money value
1. Export save data ex "BulletHeaven2Data.meow"
2. Open file using notepad or any text editor
3. Decode using base64 utf-8 online
4. Dind the ff:
• "money": 10000 (or any value you like as long as it is not 6 digits)
• "weapons" : [true,null,null.... (set all null to true)
• "costumes" : [true,null,null.... (set all null to true)
5. Encode using base64 utf-8 online
6. Import data
7. Enjoy
Note: Setting "players" null values to true is not enough to unlock expansion characters :D
 "Bullet Heaven 2"){kind=icon}