This puzzle can be found in the Shield Maze during Act 1. The solution to it is pretty simple, but it’s easy to miss.
The answer to the puzzle is located on a wall in one of the previous rooms. There will be 4 pictures, each with a different color. This is the correct combination that needs to be entered.
[su_spoiler title=”Act 1 Spoiler” open=”no” style=”fancy” icon=”plus” anchor=”” anchor_in_url=”no” class=””]After entering the colour combination it will unlock the room and a cutscene plays and it will add the sword “Radiance” to your inventory automatically. This sword can be upgraded later on.[/su_spoiler]