Guild Wars 2: Heart of Thorns content

Keep Construct

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Enjoy my creation. It'll be the last you see.


Keep Construct is a magical construct made from ambient architecture pieces. It serves as the second boss of the Stronghold of the Faithful raid wing.


Heart of Maguuma

Combat abilities[edit]

  • From the Ruins of the Twisted Castle
  • Summons Phantasms, Knockdown

DefianceDefiance bar teal.png

  • Vulnerable to crowd control when both stacks of Xera's Embrace are removed.
  • When the defiance bar breaks, players get access to the Keep Construct's core.
  • Swipe - Keep Construct swipes at the players.
  • Backhand - Keep Construct slams his right arm behind him.
  • Construct Aura - A passive aura which damages all players in the arena.
  • Phantasmal Blades - Keep Construct bunkers down and casts rotating area of effect attacks around him.
  • Tower Drop - Keep Construct leaps into the air and drops onto players Knockdown.png knocking down for 3 seconds.
  • Hail of Fury - Keep Construct leaps into the air and drops debris around the area. Players hit are Stun.png Stunned for 1 second.
Special Mechanics
  • Colored Orbs - At both 66% and 33% health, Keep Construct will become invulnerable. At the same moment white and red orbs will begin moving from the statues to the Keep construct. Players may stand in the way of the orb of the same color they are attuned to, and absorb the incoming orb. The more orbs reaching Keep Construct, the more damage he will cause at the end of this phase.
  • Construct Core - Keep Construct withdraws from the battle temporarily exposing three spirits protecting its core. If the three spirits are overcome, the Construct's Core becomes exposed and can be pushed (or pulled) through unstable rifts. Pulling the core through rifts will increase the damage Keep Construct takes upon his return.
  • Insidious Phantasms - When two (white) phantasms merge, they will form an Insidious Phantasm.
  • Radiant and Crimson Phantasms - When radiant and crimson (white and red) phantasms spawn on the battlefield, each player will receive a random attunement. Players may only kill phantasms of the same attunement as themselves.
  • Xera's Fury - Large circles will spawn under each player and a red circle will slowly expand outward. Once the circle is fully filled, all players within the circle will be dealt a moderate amount of damage.
Stolen skills


Primary article: Keep Construct Chest

Related achievements[edit]

Deconstructed Spirit Vale (achievements).png Stronghold of the Faithful Heart of Thorns mastery point 15 AP.png
Destroy Xera's Keep Construct. 1 Objective Collected 15 AP.png
Down, Down, Downed Spirit Vale (achievements).png Stronghold of the Faithful Heart of Thorns mastery point 10 AP.png
Survive the fight against the Keep Construct with a reduced playable space.
Reward:Box of Raider's Supplies.png Box of Raider's Supplies
1 Objective Collected 10 AP.png

See also[edit]


  • Keep Construct has 1910 armor (687 toughness and 1223 defense). Compared to regular Raid bosses with 2597 armor, this translates to +36% power damage.
  • Keep Construct has a 200 range diameter hitbox, which is considered large.
  • This boss was first teased on June 7th, 2016 at the Stronghold of the Faithful teaser.