You’re floating around the Sky Islands in The Legend of Zelda: Tears of the Kingdom, minding your own business, when the floor starts assembling itself into a giant, glowing cube monster. It’s intimidating. I get it. The music shifts, the health bar pops up, and suddenly you’re staring down a Flux Construct II. Honestly, these things look way more dangerous than they actually are once you realize they’re basically just giant, sentient LEGO sets with a serious structural flaw.
If you're trying to figure out how to beat Flux Construct 2, you’ve probably already noticed it’s a significant step up from the Version 1 models found on the Great Sky Island. It hits harder. It has more complex transformations. But the core logic remains exactly the same: find the glowing cube, rip it out, and whack it until the boss falls apart.
The Gear You Actually Need
Don’t overthink your loadout. You don't need a Savage Lynel Bow or some crazy five-shot burst weapon to win this fight. What you actually need is a decent supply of arrows and at least one high-damage two-handed weapon. Why two-handed? Because when the Construct collapses, you want to use a "spin-to-win" charge attack to maximize your damage window.
It’s also smart to have Ultrahand and Recall mapped to your quick-dial. You’ll be swapping between these constantly. If you’re feeling fancy, bring some Bomb Flowers, but they aren't strictly necessary. Most players struggle because they try to fight the Construct like a standard Hinox or Stone Talus by aiming for the "eye." While the glowing cube is the weak point, treat it like a physics puzzle rather than a traditional combat encounter.
Why Ultrahand is Your Best Friend
Forget your sword for a second. The most effective way to handle a Flux Construct II is by using Ultrahand to dismantle it piece by piece. When the Construct is in its humanoid form, it will try to stomp you or throw its fists. Don't panic. Just back up, activate Ultrahand, and grab any block that isn't the core.
Shake it loose.
Once you pull off three or four blocks, the whole structure loses its integrity and collapses into a pile of junk, leaving the core vulnerable on the ground. This is your moment. Switch to your heaviest weapon and go to town. I’ve seen people try to just shoot the core with arrows from a distance, and while that works, it takes forever. You're better than that. Rip the thing apart.
Dealing with the "Crumble" Phase
Midway through the fight, the Construct usually gets annoyed. It’ll transform into a giant flat platform (the "Flying" or "Floor" phase) and hover high above you. This is where most people get stuck. It starts tossing cubes at you like a disgruntled toddler.
Here is the trick: Use Recall.
When it throws a block at you, dodge it, then immediately cast Recall on that specific block. Jump on top of it. As the block reverses its flight path, it’ll carry you right up to the main body of the Construct. Once you're level with the platform, jump off, pull out your bow to slow down time (Stamina permitting), and blast the glowing core with a few arrows. Or, if you’re close enough, just landing on the platform and hitting the core directly works even better.
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The Cube Transformation: Don't Get Flattened
The most dangerous move in the Flux Construct II arsenal is the giant rolling cube. It’ll fold itself into a 3x3x3 block and try to steamroll you. It’s fast. It’s heavy.
If you try to run in a straight line, you'll probably get crushed. Instead, run diagonally or use the paraglider to catch an updraft if there’s one nearby. If you’re feeling brave, you can actually use Ultrahand on the core while it's moving, but the timing is tight. Most players find it easier to wait for the cube to stop, then use Ultrahand to yank the core out of the mass.
If you find yourself getting hit too often, check your armor. If you haven't upgraded your Soldier’s Set or the Glide Suit at a Great Fairy, a single hit from a Level 2 Construct can easily delete five or six hearts.
Advanced Tactics for Faster Kills
For those who want to optimize their farm for Large Zonai Charges, there are a few "pro" moves.
- The Rocket Shield: Fuse a Zonai Rocket to your shield. When the Construct goes into its high-altitude platform mode, just hold L to blast yourself into the air. It bypasses the whole Recall mechanic and puts you right on top of the weak point.
- Dazzlefruits: Surprisingly, these don't do much. Stick to elemental fusions.
- Multi-Shot Bows: If you happen to have a Forest Dweller's Bow or a Duplex Bow, fusing an Ancient Blade or a high-level Fuse material (like a Gibdo Bone) to your arrow can sometimes end the phases instantly.
Location and Loot: Why Bother?
You’ll mostly find these guys guarding chests on the Sky Islands or blocking paths in the Depths. The version 2 models are a sweet spot for farming. They aren't as ridiculously tanky as the III models found in the late-game areas, but they drop much better loot than the basics.
When you win, you'll get:
- Flux Construct II Core: This is a "fused-only" item. You can't put it in your pocket. You have to fuse it to a weapon or shield immediately. It adds +24 Fuse Attack Power, which is a massive boost for mid-game players.
- Large Zonai Charges: Essential for keeping your energy cells running during long flights.
- Zonai Devices: Usually a handful of random capsules like Fans or Beam Emitters.
Common Mistakes to Avoid
Most players fail because they get greedy. They see the core exposed and try to get one last hit in before the Construct reassembles. Don't do that. When you see the blocks start to vibrate and glow orange, get out of there. The reassembly animation has a "knockback" hitbox that will send you flying off the edge of the Sky Island if you aren't careful.
Also, watch your surroundings. Fighting a Flux Construct II near a ledge is a double-edged sword. You can knock the core off the side, which technically wins the fight but makes it a nightmare to collect your loot. Keep the fight centered on the main platform.
Step-by-Step Victory Plan
First, identify the glowing cube. It moves around the body, so keep your camera locked. Second, use Ultrahand to pull at least five random blocks off the body to force a "break" state. Third, use the two-handed spin attack on the core while it's laying on the ground.
When it switches to the flying platform mode, wait for the projectiles. Use Recall on a projectile to ride it up. If it switches to the giant cube, just stay mobile and wait for it to stop before grabbing the core with Ultrahand.
That’s basically the whole loop. It’s a rhythmic fight. Once you find the beat, you can clear these in under two minutes without taking a single hit.
Now that you know the mechanics, go find a Construct in the Central Hyrule Sky or the Lanayru Sky Archipelago. Practice the Recall trick on the flying blocks—it’s the single most important skill for mastering these encounters. After you’ve cleared a few, head to a Forge Construct to spend those Large Charges on some high-tier Zonai gear or Energy Wells. You’re going to need that battery power for the bigger bosses later on.