There are quests that allow users to reach higher campaign levels.
Stronger Heroes can reach the higher levels and can complete more quests, therefore earning more rewards.
Note: Campaigns reset players victories daily, meaning any victories after the first one will earn you less than the first time you complete the campaign in that day. But the rewards will be reset for the next day.
The rewards for each quest is calculated based on the number of players that complete the quest and the amount of $ROFI distributed to that quest.
Players will claim the reward after 1 day, and the time countdown for the reward to be available will be shown.
Quests are classified into 1-star to 6-star, which suggests the quest difficulty and the amount of rewards for completing them.