The game's concept is super creative!
A couple of things though:
1. jump cooldown, I saw somewhere you said that it was inconsistent with the framerate, make sure you are subtracting by Time.deltaTime from your cooldown timer to make it framerate-independent.
2. I am on a 4k screen, so the canvas scaling was wayyyyyyyy small. To fix this, go into your canvas scaler component (on the canvas) and change it from constant pixel size to scale with screen size, and set the reference resolution to 1080p.
https://docs.unity3d.com/Packages/com.unity.ugui@1.0/manual/script-CanvasScaler.html
3. I wish the first NPC wouldn't start talking to me when I ran past it, as I kept wanting to retry that jump, and the NPC talking to me didn't let me jump, which felt frustrating.
I didn't get very far in the game, so there's not any more feedback I can give, but really nice job with this!