Cari amici, questa non è una guida ma un TUTORIAL, visto che il gioco non ne ha, ma vi lascia letteralmente allo sbaraglio, senza sapere quali tasti usare . 

If you launch the game from PC where someone else already finished the game you will unlock all achievements in a second on game start. Or you can replace saves from completed game with yours, you will get same result. 

Простой способ получить все достижения в игре, используя мощь реестра Windows. 

Easy 100% Achievement Guide + Walkthrough 

This guide will show you all books located in this game.