I'm very sorry that you weren't able to understand the story because everything was in Italian.
There are no enemies inside the game, only the "voices" that talk with you during the gameplay and help you discover all the info about the level, there are background descriptions, nothing that is needed to complete the level.
I would like to know better about the smoothness of the game because I didn't run into any particular problems, even on my laptop, that isn't good for games, when I did my tests.
If I'm going to do an update, I will try to resolve the language barrier so more people can enjoy it