User blog comment:Gen. Grievous1138/I finally have an up-to-date modpack!/@comment-25813566-20150101160811/@comment-25560665-20150106154227

Utunmo is hard precisly because you get swarmed by wave after wave of enemies.

Obsidian layer features tormented elves who will shoot you non-stop and then cut you down if you get close

In bottom layer your going to burn, like a LOT. It also has balrogs, who can set an entire corridor on FAYA