Hello everybody I'm Its Susi and here is a video I did for the achievement " That's A Real Lunker!"
Early on during the main story line, after defeating the Wasp Queen, you will be given the ability to chose a quest via 4 quest cards in the Hero's Guild. The one you want to choose is the quest for Orchard Farm. If you are in the Hero's Guild and go up to the map, you can select the quest for:
Protecting Orchard Farm from Bandits
or
Assist Bandits in stealing crates from Orchard Farm.
Once you click on either quest it will give you two options
Do Quest
OR
Do Quest and Boast
You will want to select do quest and boast. Once you hit ( A ) it will automatically bring you outside where you can select what boast you would like to use on the quest. There are 5 to choose from, but the only one you need to choose is " No Protection"
After you choose the boast you will be stripped of your equipment and you can follow the map to your quest.
Once there you will be asked to protect stones from 3 waves of 3 guards. Simply beat up all 3 waves, with the help of the guards provided, and you will have to talk to Whisper.
Whisper will teach you about flourishing.
After the training lesson you will complete the quest gaining you two achievements
That's A Real Lunker
and
Becoming A Man
Hopes this helps guys!