September’s big content drop for Lost Ark has arrived today, starting with an impressive 16-player raid against the Chaos Guardian Behemoth: “With a limited pool of eight revives available, prepare for mayhem as your group works together to fell the enormous dragon in a two-gate raid requiring item level 1620. There are no Sidereal or allied forces skills in the raid — it will be up to your 16-player group to vanquish Behemoth.”
The misbehaving dragon is only the tip of this patch iceberg. Lost Ark also introduced a new progression system called weapon transcendence. This uses materials from the Behemoth raid to power up their weapon.
Other additions include two more quests, 14 additional achievements, the brand-new Chase the Storm event, and several returning events such as Blooming Mokokos and Arktoberfest. Amazon is extending several current events until October 9th as well.
Source: Lost Ark