The Phalanx trophy / achievement in God of War Ragnarok is unlocked once you obtain all five unique shields for Kratos: the Guardian Shield, Stone Wall Shield, Dauntless Shield, Shatter Star Shield, and Onslaught Shield. These are acquired in different ways throughout the game, and we’ve included a table below providing an overview for the location of each.
Obtain all Shields
|Guardian Shield||Acquired from Brok during The Word of Fate main quest|
|Stone Wall Shield||Crafted at the Blacksmith Shop from Brok, Sindri or Lunda|
|Dauntless Shield||Crafted at the Blacksmith Shop from Brok, Sindri or Lunda|
|Shatter Star Shield||Acquired from a Legendary Chest in The Abandoned Village region of Vanaheim|
|Onslaught Shield||Acquired from a Legendary Chest during the Unleashing Hel main quest|