After you teleport into the Inverted Castle, you will immediately transform into Bat. Almost the entirety of this section will be spent in Bat form and involves chaining Wing Smashes together in long hallways and precise bat movement around and through enemies as you make your way through the Route. Along the way, you will encounter a fight with Medusa. Medusa is one of the bosses that drops a Relic that would ordinarily be required to complete the game, but since we will be performing the [[Relic Skip]] in the upcoming section, there is no need to collect it.