There's more to Mighty No. 9's demo than meets the eye. Peel back the layers of code and you'll find huge portions of the final product, which itself is not due until February 2016. Read on if you don't mind blowing the lid off unseen content.
Data mining credits go to MadArtRaven. Here's the models tucked away in the demo.
These models are just the tip of the iceberg. MadArtRaven tells me most, if not ALL of the full game is here in the demo. Multiplayer and challenges aren't apparent, of course, but for the most part this is the actual Mighty No. 9. All stages, all bosses, all DLC, and even Beck's 11th transformation "Xel Beck" are here. The only safe measure preventing users from accessing the full game is the apparent lack of some script.
The reason we're seeing this is due to a vulnerability in Unreal Engine 3. Comcept has left the proverbial back door open, exposing these assets to anyone with the right know-how. Oops?