Struggling hard, you manage to knock the squirrel off of you, and without a second thought you run. You can hear its footfalls behind your own, its angered screeching at your attempt to escape its grasp. You don't need to look back to know that it's catching up to you, getting closer every moment, and you don't need to think hard to realize that it's angry enough that it wouldn't hesitate to kill you if it got the chance, so you try to run faster. You give it your all... but, unfortunately, your all is rather little after everything you've been through tonight. You're doomed, you think, and you don't stand a chance against this. Whatever it is that's out to get you, it's already won.
Just as you've abandoned all prospects of hope and survival, you see a building! The door's open, almost like it's inviting you inside! This is your escape! Without hesitation, you dive inside and slam the door shut, quickly searching out any locks on it and sealing it with them as tightly as you can. You hear the squirrel ram the door, and again a second time. You hear it run into it again, and again it fails to break through. It seems you're safe for now, but you can hear a low growl on the other side of the door; you aren't going to be getting out of here anytime soon.
Unfortunately, your chances would have been far better with the squirrel. Unbeknownst to you, this is not some mere structure. Nay, while the thing you stand in now appears to be some fabulous mansion, it is in fact something far more sinister. An entity, you might say, not of malice, but of trickery. A being that cares for neither your life nor your dignity, that would do anything in its power to humiliate and degrade you for its own amusement. It was this being that created the monsters you've seen up until now, stretching its powers for just this one night to manipulate you on a path towards its doors, to bring someone foolish enough to enter its walls without questioning its nature. Perhaps the only saving grace you've been granted is that this extension of its power was far too much for it to maintain, and it is now too weak to so much as touch you solely for being in its domain. However, its power still flows through all in this house, and the mere touch of fabric or bite of foods in this place would be more than enough for it to extend them to you.
And so, with you standing at the entrance of this place and gaping at its splendor, the being begins its game. It waits for your ignorance of its true nature to spill through, to cause you to slip even once. It needs only that you make a single mistake, and then it can start its "fun".