Nice little game. I'm so glad that I could help you make your player character fit better into your environment. Really love the trail effect now 😍
Regarding your environment. I really love the art style. Everything looks amazing. The only thing that I would change is adding a gray color for objects the player can move throw, because right now it is not 100% obvious which objects have colliders and which not (mostly the big circle trees).
You made a small mistake for your player movement script. You forgot to normalize the player input because you are moving faster when going diagonal. A simple ".normalize" at the right position in your code should do the trick. Let me know if you need help with that 😉
Also. I would suggest removing buttons that don't work to not confuse players (Credits button). I would also remove the Quit button from the WebGL build because it doesn't make any sense usually and it looks weird when the game suddenly freezes. You could solve this via code and disable the button for the WebGL build with:
#if UNITY_WEBGL
quitButtonGameObject.setActive(false);
#endif