If you want the full version and license for commercial use,
you can purchase here :

https://fontkong.com/product/backstranger/

File include : 

1. Backstranger.otf
2. Backstranger.ttf
3. Backstranger.woff
4. Backstranger Italic.otf
5. Backstranger Italic.ttf
6. Backstranger Italic.woff
7. Backstranger Thin.otf
8. Backstranger Thin.ttf
9. Backstranger Thin.woff
10. Backstranger Thin Italic.otf
11. Backstranger Thin Italic.ttf
12. Backstranger Thin Italic.woff