Besides the technical issues (camera position and handling, QTEs), I as someone not familiar with the original am not sure what it is meant to be in terms of the story and the gameplay.

1. The trailer is showing some kind of combat, the demo feels more like a suspense kind of horror game. Btw is it a horror game at all? If there will be combat encounters, the sluggish camera movement will become an issue. It might even make flight sequences unnecessarily uncomfortable.

2. The character in the demo doesn't seem to be frightened at all. Which is funny somehow because scary things happen but she doesn't care. It seems like she is either not aware of a threat at all or she's (used to) lucid dreaming. Either way it takes away the tension for the player. At least that's what it does for me.