Here is the full list of all 15 Here Be Dragons achievements.
Complete "Gone Fishing" campaign.
Complete "Hawk of Justice" campaign.
Complete "Whale Hunting" campaign.
Complete "Research Expedition" campaign.
Complete "Unholy Water" campaign.
Complete "Song of the Sea" campaign.
Complete "Volunteer" campaign.
Complete "In pursuit of fame" campaign.
Complete "A knight's duty" campaign.
Complete "Maiden voyage" campaign.
Complete "Naval Academy" campaign.
Complete "A Big Problem, or a Trifle?" campaign.
Complete "Avant Armada" campaign.
Blow up at least 3 dice, at once.
Deal at least 10 damages in the single attack.