This trophy is for getting a gold medal in "A Pub's Pipe Problem". To get a gold medal you'll need to get the correct answer on your first try, and you'll need to solve the puzzle in under 1 minute and 45 seconds.
You have to arrange the pipes so that each tap is connected to the barrel of matching colour. To see the answer to the puzzle, click the spoiler below.
Please vote positively if this guide was helpful and feel free to leave a comment if I can improve it in any way.