Echos Of Reincarnation

This is my first scenario so tell me if there is anything wrong it the comments. Your quest is to defeat the demon lord. You start in the kingdom, then go to the path then arrive at the Demon King’s hideout. This scenario is meant to be difficult. Sample: You are walking on the sidewalk when all of the sudden a piano falls from a building. everything goes dark, and you die instantly. However, this is the beginning of your story. you have reincarnated into another world.