As always, rolling toward the source of a projectile will make it easier to dodge.
They can be summoned with one button press and any number can be summoned at once. The summon signs seen are NPC summons for the Festival Mechanic.Torrent is available for this fight (unless other players are summoned in for co-op).
Ranni the Witch will return to Ranni's Rise if she was not there before.Starfall Crater is formed and a red sign appears on the map, and Nokron, Eternal City becomes available.Enia will give you a Talisman Pouch if it is the second Great Rune holder that the Tarnished has defeated.Enia will become available in Roundtable Hold if this is the first Great Rune holder that the Tarnished has defeated.Drops 70,000, Remembrance of the Starscourge.Is vulnerable to a critical hit after being stance broken.He can only be reached when the Radahn Festival is active. Starscourge Radahn can be found through a portal at the end of Redmane Castle in Caelid. Unlike most other bosses, summoning NPCs will not reduce the number of runes you receive.NPC Summons: Blaidd, Iron Fist Alexander, Patches, Great Horned Tragoth, Okina, Lionel the Lionhearted, Finger Maiden Therolina, Castellan Jerren.Spirit Ashes are NOT allowed for this boss.Closest Site of Grace: Chamber Outside the Plaza.This is an optional boss, but he must be defeated to access Nokron, Eternal City and to achieve a certain ending.All so he would never have to abandon his beloved but scrawny steed. The Red Lion General wielded gravitational powers which he learned in Sellia during his younger days. In addition, he must be defeated to access Nokron, Eternal City, achieve a certain ending, and unlock the Shadow of the Erdtree expansion. However, he is a shardbearer, and two of the five available shardbearers must be defeated before entering Leyndell, Royal Capital. Radahn is an optional boss, and doesn't need to be defeated to advance Elden Ring's main storyline. He is located in Caelid, where he can be accessed from Redmane Castle after activating the Radahn Festival by progressing far enough in Ranni's questline, or activating any site of grace in Altus Plateau. However, his resulting affliction with the Scarlet Rot caused him to be driven to insanity, crippling him and reducing him to a state of feral rage. Starscourge Radahn is a Legend Boss in Elden Ring. Starscourge Radahn is heralded as one of the mightiest living demigods, having fought Malenia the Severed to a standstill during the war of the Shattering.