Here is the full list of all 24 The House of Da Vinci 2 achievements.
Finish the game in under 4 hours.
Finish the game in under 7 hours.
Finish the sun rays minigame in the final chapter without using Oculus.
Finish the lift controls minigame in the fourth chapter without using Oculus.
Have five items in your inventory at the same time.
Finish the minigame in the book in abbot's chamber in the fifth chapter on your first try.
Finish the monstrance minigame in the fifth chapter without using Oculus.
Find a ghost in the back of the scriptorium in the fifth chapter.
Finish the game in under 10 hours.
Finish the final chapter.
Complete all sketches in your diary in all chapters.
Gain the key to the sanctum of the secret library in the final chapter.
Finish the Rubik's cube minigame in the final chapter.
Finish the fifth chapter.
Replace the lift winchwheel in the fifth chapter.
Finish the fourth chapter.
Finish the third chapter.
Get a sketch of the mysterious invention in Leonardo's secret workshop in the third chapter.
Finish the shell minigame in the third chapter on your first try.
Finish the second chapter.
Remove the stone slob from under the gazebo in the second chapter.
Finish the first chapter.
Repair the bridge in the first chapter.
Repair the winchwheel in the first chapter.