Hello there!
Thank you for all your feedback.
I think this is more a demo of my 3d model skills, in fact it was my final project for my career. It began as a 3d model project, and in the end i made a game. I made all alone in 3 months (the only developer, artist, marketing guy, etc), so i've learned a lot of Unreal engine and the pipeline of 3d art for games. The story changed a lot during the making process and there was more puzzles to resolve, like a combination or something like that, but i hadn't enough time to do it. But i'm happy about the final result, and furthermore, you played the updated version which includes the story with a little explanation xD.
Well, in any case, i appreciate so much you feedback, and in a future maybe i'll make a second part explaining more and adding some new features.