Finish the minigame in the book in abbot's chamber in the fifth chapter on your first try.

Replace the lift winchwheel in the fifth chapter.

Complete all sketches in your diary in all chapters.

Finish the fourth chapter.

Finish the monstrance minigame in the fifth chapter without using Oculus.

Finish the sun rays minigame in the final chapter without using Oculus.

Repair the bridge in the first 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.

Find a ghost in the back of the scriptorium in the fifth chapter.

Finish the final chapter.

Finish the first chapter.

Have five items in your inventory at the same time.

Finish the lift controls minigame in the fourth chapter without using Oculus.

Finish the Rubik's cube minigame in the final chapter.

Repair the winchwheel in the first chapter.

Finish the game in under 7 hours.

Finish the third chapter.

Finish the fifth chapter.

Finish the game in under 4 hours.

Remove the stone slob from under the gazebo in the second chapter.

Gain the key to the sanctum of the secret library in the final chapter.

Finish the game in under 10 hours.

Finish the second chapter.