Sumeragi Secret Bunker 2 is the penultimate stage in Gunvolt Chronicles: Luminous Avenger iX.
Copen and Lola head deeper inside Sumeragi's underground base where the "Butterfly Effect" is located, but they have to get past their familiar adversaries before going forth....
Blade: iX...I've given you my word that I'll protect Kohaku and the others. Beyond here is Sumeragi's "Eternal Peacekeeping Device," the Butterfly Effect. It's a machine capable of monitoring and controlling Septimas worldwide. But in order to create it, they... When you finally come upon it, what choice will you make...?
- This stage is the first half of the endgame boss rush. Expect rematches with Rebellio, Stella, and Crimm.
- Some moves have been slightly modified for this rematch, though not to the level of the EX Bosses
- At the end of this gauntlet waits the Butterfly Effect, Copen's goal for a good chunk of the game...