After the 1.6.4 update, we noticed that the Leraye Event Story achievement 

"Accumulated boss defeat in event Battles" was not being counted.

We sincerely apologize to all the Descendants of Solomon who were surprised to find that your 

achievements were not counted, although you have proceeded with the achievement.

In this regard,

 Read the Event story for the first time

 Win an Event battle for the first time

 Read all Event stories

 Clear all Event battles

 Accumulated boss defeat in Event battles (1) - (6)

The following achievements were unable to be achieved.

Since the event is coming to a close, we will mail the completion rewards for the event's achievements to 

all users, regardless of whether or not they have cleared them after the fix.

We will review more meticulously so that the event can be proceeded without any surprises.

Thank you.