I just found out what badge for beating ch4 says

It name says "CHAPTER IV-YWJP PQNJ XWYG"

Desc "hkkg xwyg wp pda swnjejco ukq dawnz xqp ep zkaojp iwppan. ckejc xwyg eoj'p sknpd ukqn peia"

Translation Name "CANT TURN BACK"

Desc Name Translation "look back at the warnings you heard but it doesnt matter. going back isn't worth your time"

Used Caesar's cipher on 22th shift