River Acheron

River Acheron is a set of special stages that appears on the 11th, 12th, 25th and 26th days of every month. It is unlocked after clearing River Styx. The first stage yields 1 million XP when first completed, while the second stage drops the True Form of Express Cat, Bullet Train Cat.
==List of Stages==
 			Difficulty 	Difficulty
 			Translation 	Energy
Stage 1			A・Shura's Path Extreme 	200
Stage 2			Rakshasa Highway Super Extreme	200
==Appears==
===Japanese Version===
*The 11th, 12th, 25th and 26th days in any month
*First appearance: April 25th, 2019 to April 26th, 2019
===English Version ===
*The 11th, 12th, 25th and 26th days in any month
*First appearance: May 25th, 2019 to May 26th, 2019
==Trivia==
*Acheron and Styx are the names of two of the underworld's rivers in Greek mythology.
==Reference==
*https://battlecats-db.com/stage/s01199.html
Category:Awakening Stages
Category:Advent Stages