You can encounter battles, puzzles, and rewards. The Portal node moves you to the next stage of the campaign, like in Portal. In most campaigns, you can’t move backward once you’ve gone through a portal node. You can also choose an ally character in the ally node, or relics in the relic node. Heal node heals your characters, revive node revives one of your fallen characters. Point-of-interest nodes will provide you with extra lore of the game world. The book-shaped end node will take you back to the campaign selection view.