It's just about time guys so I thought I'd post a quick couple of ideas that are fully implemented in the demo. Remember this is just the first stage so it's not meant to be too incredibly tough, but more of an introduction to game elements that will persist throughout the rest of the game.
1.) Dynamic light and shadows on walls and edges
2.) Quick Time Events in critical moments
3.) Chase scenes
4.) Hiding
5.) A story you can invest in
6.) A 'hub' in the university (which will be expanded in the full release)
7.) Noises, creaks, shadows!
8.) Math puzzles
9.) Switch puzzles
10.) Name puzzles
None of these are what I would call very hard for a first stage. But they should give gamers an idea of how puzzles will evolve throughout the rest of the game.
