Original Post — Direct link
about 3 years ago - /u/JagexAbe - Direct link

Hello! I've seen a couple of questions on this, so to clarify: This is a change specifically to the prerequisites which lock the achievement if not met. Previously, the achievement was looking for a total followers' level of 500 as a prerequisite, which was causing the achievement to be locked for people who should have completed it in some fringe cases. Now we look for the quest Darkness of Hallowvale as a prerequisite as that is all you require to have enough followers to level up to 500 total. You still have to get level 500 total follower level to complete the achievement.