History of Ascendant Intruder

Ascendant Intruder is awarded for completing any one Ascendant Challenge in the Dreaming City (40 score).

How to complete

1. Go to the The Dreaming City and get a Tincture of Queensfoil (found in Dreaming City chests; TheGamer also says Huginn sells them at Harbinger's Seclude). Drinking it grants the Ascendance buff for 30 minutes so you can see and enter the portals.
2. Check which challenge is live: one of six is active each week. Petra Venj's weekly bounty and Toland the Shattered's hints point to it.
3. Enter the portal into the Ascendant Plane. Up to three players may enter; if you die you respawn outside the challenge.
4. Finish the challenge: e.g. Forfeit Shrine (Gardens of Esila): cleanse corruption with Arc charges then kill three Ultra Knights; Shattered Ruins (Spine of Keres): climb the tower, kill an Ultra Phalanx; Keep of Honed Edges (Harbinger's Seclude): kill three Ultra Knights with the Hive Cleaver; Agonarch Abyss (Bay of Drowned Wishes): descend and kill two Ultra Wizards; Cimmerian Garrison (Chamber of Starlight): obstacle course, kill an Ultra Knight; Ouroborea (Aphelion's Rest): destroy four Taken Blights, then eight Void crystals.

Note: TheGamer's older guide uses different names and describes some tasks differently; the D2 Wiki list above is used here.

Rewards

Dreaming City weapons and armor on first weekly completion per character. Part of the Dreaming City triumph set; see also Ascendant Champion and Ascendant Paragon.