Autumn Event
From PSU Cyril Wiki
The Autumn Event is a special event which will run from September 25, 2009, through October 8, 2009. This event is based closely off of the Winter Event. However, Ambition of the Illuminus players can run a new S2 difficulty with enemies that are over 150 in level.
Event missions
Unlike similar past events, the missions are not released on a schedule and are each available for the full runtime of the event.