The Final Challenge is an arena challenge found in earlier versions of CrossCode. As of Early Access v0.3.0, it is no longer accessible.
The Final Challenge consisted of four stages and 26 enemies. The challenge's main difficulty was due to it being early in the game, before Lea can level up, unlock skills or find equipment. The Final Challenge originally appeared after the credits of the TechDemo, and was moved to the end of the Rhombus Dungeon for the Demo. It was removed from the game due to the merge of gameplay modes in v0.3.0, which made it difficult to integrate the challenge into the story before Lea reached a level high enough to negate the challenge.
The rounds of the Final Challenge were as follows: