Not just Ivan, every holder of the [White Rainbow], whether they came to take the sword after the update or had already obtained the sword before the update, would receive the [Sword Thief] achievement as long as they carried the [White Rainbow].
At the same time, they would face the risk of being hunted by assassins.
"To be hunted once exposed," was Lincoln's last act of mercy for the casual and collector players.
As for the "assassins", currently there are only NPCs. However, as players start to undertake the series of missions of [Assassin's Way], they will find that before graduation they will be given a task called "Seek the Sword".
As for the content of the task -
Of course, find a [Sword Thief] and slay him!
The player circle was quite agitated, cursing Lincoln as a miser.
But everyone has known Lincoln was stingy for a long time, so it didn't come as a complete surprise.