Just like in Undertale, nothing in Deltarune is ever really as straightforward as it may seem. This game has its fair share of secrets as well, and that includes a secret boss called Jevil.

Encounter the nightmarishly difficult optional boss in Deltarune: Chapter 1 ... At the bottom, you’ll find Jevil’s Cell. To open Jevil’s Cell, you’ll need to repair the key.

This page contains information on how to defeat the Secret Boss of Chapter 1 - Jevil. This includes both tactics for defeating him peacefully or attacking him, as both options will give different ...