Film name

For the name, I can't decide whether to play with the story and give it an obvious name. Or take the original name of the short film I'm basically recreating. Or give it a slightly humorous name to almost confuse the audience as to what they are viewing. 

For the more obvious names I could go with:

Schizophrenia.

MPD (Which is short for Multiple Personality Disorder)

Sanity. 

Not Insane? 

These names play on the fact the main character has multiple personality disorder which is considered a sanity defect. 

Due the the fact I am recreating: The last man on earth, I could go with:

Last Brian on Earth.

Last Man Alive.

The first one 'Last Brian on Earth' is a light hearted take on the original, whereas 'Last Man Alive' is an obvious name, that puts the film in a specific genre straight from the start. 

Or I could just generally go with:

Brian.

All Alone. 

These two are very different. 'Brian' is misleading as it doesn't say much about the story, it just gives away the characters name. 

'All Alone' is obvious, but doesn't necessarily give away the story either. It doesn't give away the fact that Brian has a sanity disorder, or the fact he's the last man on earth.