Mission structure has also changed somewhat. Like in "Factions", bonus rewards are dependent on the performance during the mission, not just one side quest; however, the bonus could depend on something like killing certain creatures or preventing others from dying. For all but the last two missions, a certain hero must be in the party before the mission can begin. There are three pairs of missions where either one or the other must be completed before the plot progresses. Two of these pairs are selected depending on which hero was added to the party early on, while the third mission split offers a choice to the player. All the missions can be completed at the appropriate place in the plot, either depending on other players or by waiting until the plot has been completed (at which point players may gain all the heroes that they had previously chosen not to take).