Board Thread:Questions and Answers/@comment-84.121.157.66-20140131174649/@comment-2137099-20140201061322

Levels 180-184 were known as "Hell's Cluster." They were 5 extremely difficult levels all in a row. However, levels 183 and 184 were nerfed (difficulty drastically reduced) so it is now only three difficult levels in a row no longer really classifying it as a cluster. Many people try and pick out a group of levels that are all very difficult in order to deem a new Hells Cluster. But alas, no other grouping of levels matches the difficulty that once was 180-184.