ARC Raiders Hydra Enemy Guide – How to Beat It on the Frigate and Farm Amplification Modules

TL;DR:

• The Hydra is the toughest new ARC enemy in the Frozen Trail update — a stationary three-section turret found aboard the Frigate.
• It’s a map condition encounter, not a roaming enemy. Select a raid with the ARC Frigate condition active to fight it.
• Its three weapon sections operate independently and can target multiple Raiders at once — staying clustered together is a fast way to wipe.
• The Hydra’s confirmed weak point is its rear — the back is unarmored. Get behind it while it’s distracted and you can drop it fast.
• Green/glowing sections on the Hydra take increased damage — prioritise those over armored plating.
• Rocketeers and Vaporizers also spawn on the Frigate during the fight. Ignoring them is how squads fall apart.
• Beating the Hydra and completing the Frigate sabotage rewards Amplification Modules — core endgame materials for weapon amplification progression.
• Don’t try this solo unless you’re experienced — the Hydra is specifically designed for squads.

The Hydra is the crown jewel of the Frozen Trail update’s new threats. While the Bully and Skulker roam Pendola Pass as field encounters, the Hydra sits at the top of the Frigate waiting for you — and it’s built to destroy squads that push in without a plan. This guide covers everything confirmed about the Hydra in ARC Raiders: what it is, how to find it, how the fight works, how to kill it efficiently, and what you get for doing so.

What Is the Hydra in ARC Raiders?

The Hydra is a stationary ARC turret made of three independently moving weapon sections, introduced in the Frozen Trail 2.0 update. Unlike the Bully or Skulker — which roam Pendola Pass as standard field enemies — the Hydra is the main encounter aboard the ARC Frigate, the airborne endgame event added in Frozen Trail.

What makes it uniquely dangerous compared to any other ARC enemy in the game is its multi-targeting design. Each of the three sections can independently track and fire at a different Raider simultaneously. This means even a full squad of three cannot simply spread out and assume they’re individually safe — all three sections can be firing at all three players at once. Embark designed it specifically to be the hardest fight in the update, intended for experienced Raiders, not for early-game farming.

Where to Find the Hydra — How the ARC Frigate Works

Where to Find the Hydra How the ARC Frigate Works

The Hydra doesn’t roam a map and can’t be stumbled into. It’s tied to the ARC Frigate map condition. Here’s how to access it:

• Check the map condition before queuing. The Frigate is a map condition, not a permanent fixture. Before you deploy, check the condition shown beneath each map. When the ARC Frigate condition is active, the ship appears in the raid early enough that you have time to board, complete the encounter, and extract before the raid ends.
• Find a Reclaimer on the surface. The Frigate deploys small Reclaimer drones toward the ground to collect materials. Intercept and disrupt one — this forces it to fly back up to the ship, giving you a platform to ride up and board.
• Board the hull, then navigate inside. Once the Reclaimer reaches the Frigate, step off onto the hull. From there you need to climb and navigate through the interior to reach the top deck. The interior is tight — corridors, panels, ledges, and vertical sections. Bring a Grappling Hook; it’s almost essential for navigating the Frigate efficiently.

Important note: Raider Hatches are disabled during the ARC Frigate map condition. Your standard extraction method is locked out. Plan around this before you board. Also — Free Loadouts are disabled during this condition, so bring gear you’re willing to risk losing.

Other Raiders can board the same Frigate. Decide early whether you’re cooperating or competing, because the central sabotage sequence requires three Raiders to activate three controls simultaneously. That mechanic is a hard wall for solo players without help.

The Hydra’s Attacks

The Hydra is stationary — it doesn’t chase you. But don’t mistake immobility for passivity. Its three independently moving sections give it a massive field of fire that punishes any Raider who stays in a fixed position too long:

• Multi-section simultaneous fire: All three weapon modules can actively fire at the same time, each tracking a different target. If your squad bunches up, all three sections can focus one player at once and delete them instantly.
• Heavy sustained pressure: The Hydra doesn’t do hit-and-run. It fires continuously once it has a target. Staying in the open gets you killed faster than almost any other encounter in the game.
• Bug warning (2.0 patch): The official 2.0 patch notes identify a known bug where the Hydra can detect and shoot Raiders through walls in the cargo area of the Frigate. Stay aware of this — cover is not always as reliable as it looks on the Frigate.

Hydra Weak Point – Where to Aim

The Hydra has a confirmed exploitable weak point: its rear is unarmored. The front and sides are heavily armored and soak up damage without much return. Getting behind it while it’s distracted — ideally while a squadmate holds its attention from the front — lets you deal damage extremely efficiently and drop it quickly.

Beyond the rear, look for glowing green sections on the Hydra’s body. These are the exposed damage areas you want to be shooting. Targeting the glowing sections rather than the armored outer plating dramatically speeds up the kill. The same principle that applies across all ARC enemies in this game — yellow and green damage indicators signal weak points, white means armored — applies here.

Per the Frozen Trail explosive rebalance, explosives now deal over 50% more damage against ARC armor plates, but deal less damage to fragile or exposed components. The practical approach for the Hydra is to use explosives to break or weaken armored sections, then switch to accurate weapon fire when the glowing weak points are exposed.

How to Kill the Hydra – Combat Strategy

Spread Out and Rotate Attention

The Hydra’s multi-targeting design is a direct punishment for squads that cluster. The counter-strategy is equally direct: spread out to separate firing positions and force the three sections to split their attention across the whole squad. When one section is focused on a teammate, that’s your window to push in on the unguarded rear or attack the exposed green sections without taking return fire.

Actively rotate which player is drawing the Hydra’s attention throughout the fight. This isn’t just a nice-to-have — it’s the core of how the encounter is designed to be beaten. One player absorbs focus, the others deal damage, then rotate. Coordinate before the fight starts so everyone knows the plan.

Use the Frigate’s Cover

The top deck of the Frigate has barriers and structures you can duck behind. Use them. The small barrier toward the far wall of the central area gives you a reliable firing position — get behind it, pop out to fire at the glowing sections, and duck back when the Hydra swings its attention to you. Don’t fire from the same spot consecutively; shift position between bursts.

Deal With Rocketeers and Vaporizers First

The Hydra doesn’t fight alone. Rocketeers and Vaporizers also spawn on the Frigate and will pressure your squad throughout the encounter. Fully focusing on the Hydra while ignoring these adds is how squads get overwhelmed. Clear the surrounding ARC before or alongside engaging the Hydra — at minimum, keep one player watching for additional threats while the rest work on the turret. Fireflies can also appear in certain conditions on the Frigate; have something that handles flying ARC in your loadout.

Solo Attempt Warning

Attempting the Hydra solo is possible but extremely hazardous. The three-button activation mechanic that raises the central Power Core to a vulnerable position requires three Raiders pressing controls simultaneously — without squad cooperation (either from teammates or other Raiders on the same Frigate), this sequence cannot be completed. Until an alternative method is confirmed, the central sabotage is a hard solo wall. If you’re solo and another squad is boarding the same Frigate, coordinate rather than fight.

Best Weapons and Loadout for the Hydra

The Frigate is a high-risk environment and Free Loadouts are locked out during the condition — bring weapons you’re prepared to lose. Confirmed strong picks:

• Hullcracker – The go-to for ARC boss encounters. High burst damage against armored ARC sections. Bring it.
• Jupiter – Confirmed effective for the Frigate encounter specifically. Strong sustained damage.
• Anvil with ammunition stacks – A cost-effective loadout option for players who don’t want to risk expensive gear on their first few attempts. Cheap but capable.
• Seeker grenades – Useful for additional ARC cleanup during the fight.
• Defibrillator – Highly recommended for squads. The Hydra’s sustained fire and accidental falls on the Frigate deck down teammates fast. Having a revive item changes how survivable the fight is.
• Grappling Hook – Not a weapon, but practically mandatory. The Frigate’s vertical interior is difficult to navigate without it, and getting back through tricky sections after a fall or reposition requires one.

For weapon progression to prepare for the Frigate, our weapon upgrade guide and ARC Motion Core farming guide cover the materials and Gunsmith steps needed to field higher-tier builds. Also check our guide on farming Sentinel Firing Cores — you’ll need those for Gunsmith Level 3 before crafting serious endgame weapons.

Hydra Loot – Amplification Modules and Frigate Rewards

The main reason to fight the Hydra and complete the Frigate encounter is the reward: Amplification Modules. These are core endgame materials introduced in Frozen Trail for the new weapon amplification system, and the Frigate is one of only two primary sources in the game — the other being the fallen Emperor on Pendola Pass.

Amplification Modules are tiered by Mark (I through V), with each Mark corresponding to a weapon’s original rarity. To unlock weapon amplification, you need the correct Mark for the weapon you’re upgrading. These are not freely farmable from standard loot — the Frigate is one of the few reliable ways to get them, which is why the encounter matters even for players who find the fight punishing at first.

Beyond Amplification Modules, the Frigate rewards include:

• High-tier ARC materials from the Hydra and other ARC defenders aboard the ship.
• Frigate-specific unique ARC items that can appear while exploring the vessel.
• Frigate Inductor — a Legendary-tier material listed for Research Station Level 4 upgrades. Worth holding onto if you find one.

For understanding how to manage what you bring back from a Frigate run, our guide on recycling and selling items and our safe pockets guide cover protecting high-value drops on the way out. The complete loot table guide is also worth cross-referencing to understand what each material you pick up is used for.

Hydra vs. the Other New Frozen Trail Enemies

For context on where the Hydra sits compared to the other two new Frozen Trail ARC machines:

• Bully – A heavy field enemy on Pendola Pass. Aggressive, armored, charges you down. Leg joints and head are the weak points. Full details in our Bully enemy guide.
• Skulker – A light ambush unit on Pendola Pass. Patient, repositions constantly, targets from unexpected angles. Thrusters and tail weapon are the targets. Full details in our Skulker enemy guide.
• Hydra – Exclusive to the Frigate. Stationary but devastating at range. Three independent sections, rear unarmored, designed for squads and not for solo play.

All three are part of the same Frozen Trail content drop. If you’re working through the new content systematically, our all quests and missions guide tracks the full Frozen Trail quest chain, and the expeditions and wipe system guide helps with longer-term run planning. New to the game or returning after a break? Start with the ARC Raiders survival tips guide and best skills to unlock first before attempting the Frigate. ARC Raiders is available on PlayStation and Xbox alongside PC.

ARC Raiders Hydra FAQ