The Mind Destroyed Game Over is an ending which occurs when losing at any point in Eric(a)'s Memories.
Due to falling in battle within their own mind, Eric(a) loses most of their mental resistances and are now unable to defend against their inner demons. Due to this they fall into a half-slumber, losing all perception of time, just barely aware that something is happening yet unable to tell how long it lasts. Eventually they feel a sudden assault and pain where their head should be and then, just like that, their life is snuffed out. Wendy and the other Isabelle both are no more, disappearing along with their life. In the real world, Eric(a)'s friends try to revive them but eventually realise the futility of it and give them a proper burial.