Everything you need to know about the Terror boss in Arcas Spire (Senedra Forest) in Hell Is Us and how to easily defeat it.

Hell Is Us might masquerade as an action RPG, but it barely qualifies as one. Apart from its Souls-inspired combat system, the game doesn’t have any similarities to traditional action RPGs. However, the game does have a few boss fights reminiscent of old-school RPGs. One of those bosses is the Terror Haze in Arcas Spire. The Terror boss is more of a puzzle than an actual boss fight, but it certainly is structured as the latter.
Essentially, you need to navigate a maze of Terror-afflicted pillars and locate the Haze. However, while the boss encounter sounds fairly simple on paper, it is quite complex in practice. The Terror Haze also has different phases, which makes it quite tricky to locate (and defeat). However, once you do figure out the gimmick of the boss fight, defeating the Terror Haze is quite easy. Here’s a comprehensive guide on how to defeat the Terror boss in Arcas Spire, in Hell Is Us.
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How To Reach Arcas Spire in Hell Is Us

You can reach the entrance of Arcas Spire quite early in Hell Is Us. Right after you exit the cave in Senedra Forest and make your way to the trenches, you can take the path to the northeast, and that will take you to Arcas Spire. However, you won’t be able to enter the tower until you reach Act 2.
Essentially, you need to collect the Blood Queen’s Sword from Marastan before you can enter Arcas Spire. And to do so, you need to progress through the game until you finish Act 1 and progress your Investigation for the Keystone of Terror. Arcas Spire is a fairly small location, with a handful of puzzles and Grade 2 enemies. However, it’s also the home to the powerful Haze of Terror.
To reach the Haze of Terror, you need to make your way to the top of Arcas Spire. Thankfully, it’s an easy climb as long as you follow the main Investigation clues. Once you reach the top of Arcas Spire, you will need to vanquish the Timeloop on top of it. To do so, you will have to defeat all the enemies inhabiting the Spire’s rooftop. Make sure to stock up on your Med Kit supplies before heading to Arcas Spire.
After you eliminate the Timeloop, you will be able to pick up the Keystone of Terror. However, doing so will result in the boss fight against the Haze of Terror.
How To Defeat the Terror Boss in Arcas Spire

Here are some tips on how to easily defeat the Terror (Haze) boss in Arcas Spire:
- For the first phase of the boss fight, you need to locate pillars that are glitching with a green haze. Hitting these pillars will reveal the location of the Haze of Terror. Do note that you will need to locate at least three of these pillars before the boss can manifest.
- Once the Haze appears, hit it until its HP drops to 75%. After that, the Haze will transition to its second phase. In this phase, the Haze of Terror will summon contraptions along the pillars. Do try to avoid getting hit by the contraptions, as they deal a ton of damage.
- Alongside the contraptions, the boss will also summon Grade 1 Hazes of Terror. However, your objective is once again to find pillars that are glitching with a green haze. The presence of Grade 1 Haze, as well as the contraptions, might make it a little difficult to locate the glitching pillars. However, you can still locate them by looking at the top of the contraptions.
- The boss usually appears after you hit at least two of the glitching pillars in the second phase.
- Once the boss materializes, hit it until its HP drops to 25%. At this point, the Haze of Terror will switch to its third phase. Thankfully, this phase is fairly simple. The only caveat here is that the Haze limits the area you have available to circumvent its attacks.
- The easiest way to dispatch the Haze is by parrying its attacks and landing a critical hit. However, you can also just use a Rage-imbued weapon (preferably Greatsword or Dual Axes) to easily defeat the boss.
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Rewards for Defeating Haze of Terror in Arcas Spire

The reward for defeating the Haze of Terror boss in Arcas Spire is the Keystone of Terror. Furthermore, you also get additional clues to the origin of the Keystones (required for the main story Investigation) as well as an Iron Key, which unlocks the path to Arcas Spire’s exit.

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