I've beaten the first Consternation on the hard mode, and I think I get it know...
The protagonist is trying to escape the basement that he was locked in by someone (with the possibility of the ghosts in the game representing these people). He might have gone insane due to the time he spent in isolation and started seeing all the people around him as demons and monsters.
The last level is a cornfield, we're escaping from a farmland where we were held, and once again, just a speculation, but our relatives might have locked the protagonist inside the basement because of a certain mental illness, or were just simply extremely abusive, which has led him to develop one...
He contemplated suicide, but decided to go on and try his chances of escaping his prison of a home...