Each season the game displays a series of events that remain unchanged every season and at the same interval of time:

• City conquer event - you have to conquer a given amount of cities, as displayed on panel. 
• Architech event - upgrade a given number of cities
• Troop production event - you have to collect troops with your recruiter bonus. City troop production is not counted in this event.
• Defense event - takes into consideration the amount of opponent's troops killed while defending.

The milestone numbers differ in each league and rotations order can vary for the first two events, based on the league you are

Events order:

Bronze -> Platinum the events order is: City conquer, Architect, Troop production and Defense.

Diamond -> Legends the events order is: Architect, City conquer, Troop Production and Defense.