Talk:Achievements/Paradox/@comment-44987562-20200228134603/@comment-33896168-20200228163028

it's been a while since I played Ilias route, so I may be somewhat off. essentially, Luka and co., trying to stop world destruction, travel to the Snow Continent, where they find a bunch of angels and a temple to ilias after the fall of heaven. the temple is a major source of chaos, and has been sealed up by Eden. you get her to realise the barrier, enter to speak with an Ilias (Paradox world's Ilias) where she explains the cause of the chaos, the Great Disaster, and other plot heavy stuff. the Lilith sisters appear, kill the dying Ilias, then the new Seraphs arrive and start fighting.

Sonya reveals she is a top rank Apoptosis, drains one of the sisters, you fight Sonya Mainyu, she drains a seraph, and you fight Sonya Chaos. post beatdown, she recovers her sanity, and takes down Adramelech, who she had summoned. mortally wounded from Adramelech, she reverses the damage she caused the world, and replaces herself with a copy and pasted version of herself from another parallel world, so Luka wouldn't be sad about her death. So the Sonya you first met is dead and gone, replaced by a copy. and iirc, Luka might have noticed the switch.

TL;DR Sonya goes bonkers, destroys world, goes unbonkers, fixes world and dies after creating a clone of herself.