This game is sweat !
The contrast between the gameplay and music threw me off, but in the end it made it somewhat a relaxing experience, well done.
There's a few point I'd like to mention:
Sometimes I would respawn inside the collider on my tombstone, so I'd need to alt+F4 and laucnh the game again which became frustrating.
Also adding some sound effects for the footstep would make the experience 10x better as It would pace the tone of the game between when you're running and crouching !