This is a paid asset, but now you can download Forest 2D Painted Environment for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
Forest 2D Painted Environment v2.0
– Tilesets for repeating forest ground and castle structures
– New props – barrel, torch, etc.
– Medieval houses
– Castle sprites
A forest environment package for 2D platformer games. All textures are in hand-painted style.
Sprites are in PNG format. All together over 120 sprites including winter and autumn variations for some forest elements.