Reference article
Builder
The Farm builder repairs the broken bridge and later receives a letter from the Desert.
Bridge repair
Bring 
Rope, 
Wood and 
Hammer after winning their local battles. The builder consumes the three quest items and repairs the bridge. A combat 
Mallet is not the quest hammer.
The letter
Deliver the Desert duck’s 
Letter to receive 
Glam rock glasses. This is the 
Letter Quest.