A Thorny Predicament is a triumph for the dungeon The Shattered Throne: overcome the Keepers of Petitions without extinguishing more than one sigil. In practice you kill Vorgeth in a single damage phase.
== How to complete ==
Weaken all four Keeper wizards to low health without collecting any Petitioner's Marks, and clear adds in all four sectors.
Stand where you can see Vorgeth and incoming Axion darts, with full ability and Super resources.
Do one full four-Mark collection, extinguish a single sigil to drop the shield, and commit all burst damage before the shield regenerates.
Destroy Axion darts so they do not interrupt you.