Yo dude, you should add a new type of mode called the “Enemy levels”
In these level, you will be pursued by a evil looking version of the player will hunt you down and try to kill you.
What the “Enemy” will look like? Up to you, but if you wanna. You can take my concept, his body will be red in colour and have a frowning face instead of a smile cuz this is an evil version of the player