In this update I have added 9 backgrounds.

1. Castle Interior
2. Castle Walls
3. Swamp
4. Desert
5. Items Shop Interior
6. RUins
7. Smithy INterior
8. Sunset Mountain
9. Temple

Find these in the folder: /Gothicvania Collection Files/Assets/Environments/Battle Backgrounds/Pack 5

and

/Gothicvania Collection Files/Assets/Environments/Battle Backgrounds/Pack 6 

Happy Gamedev!