There are many special achievements in "The Servant of the Lake," and "Fishing Touch" is one of them. To unlock this achievement, you need to go to the [Dinner Dress-Up] level, click on the mansion's hanging painting on the second floor, adjust the fish shadow to the far right of the second floor, and then return to the room with the sofa.
How to Get the Fishing Touch Achievement in Rusty Lake: The Servant of the Lake
Fishing Touch
Fishing Touch
In the [Dinner Dress-Up] level, click on the mansion's hanging painting on the second floor and adjust the fish shadow to the far right of the second floor.
Then return to the room with the sofa, click on the second-floor portrait to obtain the fish-shaped brooch, and pin the brooch on William.
Related Guide: How to Get the 'Add Some Spice to the Soup' Achievement