Forum Avatars, Vistas, and Icons are what Clanheart users can earn thoughout the game by random acheivements, completing a certain amount of missions, or backing Clanheart's Kickstarter.
Forum Avatars and Icons are primarily earned through acheivements, such as unlocking a new dye, or through a festival. Avatars are your unique picture displayed through Clanheart messaging systems. Icons are displayed right by your username on your forum posts.
Forum Vistas are decorative backgrounds displayed whenever you post a message. They can be earned by backing the Kickstarter. However, they can also be earned in game by sending a certain amount of missions.