E-5 Paranormal Chaos

So, what do you think about this mission in Treacherous Mansion?

Information: Game Spoiler
I'm getting strange paranormal readings on the Terrace. We'd better send you in to inspect the place.

It is one of my personal favorite missions in the game. It has the most ghosts than any other mission in the game, even more than the secret Boo missions. Just an abundance of ghosts. I always seem to clear all the rooms before the final one just a few seconds before it's too late.