Ah I see you figured it out :3
Just to be sure, you have the scenes where the main character and the tutorial robot talk to each other? If you go into scenes and play all the tutorial ones they should be different. That was pretty much all the new stuff.
(Edit) Oh I see you mean the 3 bosses that are missing? Those were not intended to be in the demo and I accidentally left them in for a short time.
And I know Kirby isn't supposed to be an ameba, but I just enjoyed watching the theory for fun ^^