Achievements
Achievements are special honorable distinctions. There are common and secret achievements. They give various bonuses, which increase when the achievement level is upgraded.
To obtain or upgrade an achievement, you need to fulfill certain requirements. When you do so, you will receive a message in your mail with information about the achievement and its permanent bonuses.
You can find information about each common achievement and its bonuses in the Achievements window. To open it, go to the Menu and hit the corresponding icon or proceed to the Profile tab in the Palace, hit the "i" icon, and then the "All achievements" button.
You can view information about achievements that have been obtained in a separate block in your/another player's profile. If you have no achievements, you will see a text stub in this window in your profile. If another Jarl whose profile you are viewing has no achievements, you will not see the achievements block in their profile at all.
Hitting the "All achievements" button will take you to the corresponding window. The List tab displays all available achievements, except for secret ones. The achievements that you already have differ visually from those you have yet to earn. Recently earned or upgraded achievements are placed at the beginning of the list.
The Bonuses tab displays all active bonuses from achievements you have obtained.
When you hit an achievement, a window will appear that shows information about how to receive or upgrade it, as well as its bonuses. This information is available for common achievements only. You can only learn how to obtain and upgrade secret achievements by experimenting and finding out for yourself.
You can use any achievement that you have obtained as an honorific. To do so, select it and hit the "Use as honorific" button in the window that appears. It will now be displayed under your name in the profile window and on the Global Map. This doesn't grant you any extra bonuses. It just allows you to show off the achievement or highlight your playing style. If you want to cancel this action, hit "Don't use as honorific" in the same window.