The "Blood Forest" event was an event to gain an item called "The Forlorn". The event could only be played on Extreme difficulty, with a max of 4 people and there were 12 waves of enemies. It was available from November 21st and ended December 2nd (most likely). It took place in the Blood Forest map and only 3 people have officially beaten (there could be more, that we don't know of). The 3 people who beat it are Decreers - Senior Developer, BoyyeeIt - Group Associate & Moonvane - Creator. It is speculated that Roblox user Blasting_Batwing won the event, but most likely Moonvane beat it for him, giving the player infinite HP.