The Count Lucanor (UP)
33 Achievements
5-7h
An interesting clue
Find J.F.'s most important note.
67.9%
How to unlock the An interesting clue achievement in The Count Lucanor - Definitive Guide
I have a 100% Achievement Guide for this game if you prefer a visual!
In the western part of the castle, you find a green door and if you go all the way left you find apiece of wooden plank to pick up.
A little bit later on, we end up in the North West of the castle by a blue door (We would have already unlocked this door by now)
It is the very easy spikes room we visited earlier on in the game.
Only this time instead of going up and to the right, continue left on a linear path until you reach a small gap.
Place your wooden plank down, go across it and open the chest for this achievement!
Go to 35:00 in the video to see what room and how it is done.
Hope this helps!
Once you have the green key, exit the garden from the left exit and enter the green key door. Walk left until you find Giulia (speaking with her will give you some more candles). Continue walking left of her and follow the path (avoid the red patches or you will take damage) until it splits, then walk left. You will soon come across a wooden plank. Take it.
Take the wooden plank to the blue key room with all the floor spikes (left of the kobold letter guessing room). In the top left of this room is a hole in the floor; use the plank with it and you can cross and open the chest. Doing so will give you two gold coins, an important note (it will be in your inventory) and this trophy.