Subnautica 2 Best Early Upgrades & Progression Path

TL;DR

• Craft the Scanner first — it unlocks every blueprint in the game.
• Get the Standard Air Tank early to stop dying from low oxygen.
• Visit the Welcome Center (85m southeast of Lifepod) to unlock your first Biomods.
• Interact with the Angel Comb (158m northeast of Lifepod) to unlock the Digestion Adaptation.
• Build your base after getting the Habitat Builder — it opens mid-game crafting.
• Work toward the Tadpole submarine once your base is stable.

Where to Start in Subnautica 2 Early Access

Subnautica 2 launched into Early Access on May 14, 2026, and it does not hold your hand. You wake up stranded on an alien ocean world called Proteus with a Lifepod, a Survival Multitool, and very little else. The ocean is vast. The threats are real. And the progression system rewards players who move in the right order.

The good news is there is a clear path if you know what to prioritize. This guide covers the best early upgrades in Subnautica 2, the correct order to unlock them, and how to build a solid foundation before things get genuinely dangerous.

If you have not already checked the launch details, read our guide on Subnautica 2 Early Access launch times for all regions. Also make sure your PC is ready with our Subnautica 2 PC requirements guide. You can also grab the game on Steam or on Xbox Game Pass.

How Progression Works in Subnautica 2

Before diving into specific upgrades, it helps to understand how progression is structured. Subnautica 2 runs two systems at the same time.

• Crafting System: You scan items in the world with the Scanner to unlock blueprints. Then you gather materials and build tools, gear, base parts, and vehicles at the Fabricator.
• Biological Upgrade System: You unlock Adaptations and equip Biomods to physically modify your character. These upgrades let you digest native food, tolerate heat, resist deep-water pressure, and more.

Both systems reward exploration. Ignore either one and you will hit a wall fast. The best players work both systems together from the very start.

Step 1 — Craft the Scanner

The Scanner is the single most important early tool in Subnautica 2. Without it, you cannot unlock blueprints for anything meaningful. Make this your first priority before you do anything else.

To craft the Scanner, you need the following materials:

• 2x Titanium — found on the ocean floor directly beneath your Lifepod
• 2x Quartz — found at Coral Domes, the orange rocky structures that poke out of the water nearby
• 1x Basic Battery — crafted from 2x Copper and 2x Acidic Raion Pouches in the Fabricator under the Resources menu

Copper is found on the walls inside the hole directly below your Lifepod. Acidic Raion Pouches are cut from the purple and green plants on the seafloor using your Survival Multitool. While you are collecting these materials, look for plants that release blue bubbles — they refill your oxygen and are very useful during early shallow dives.

Once you have the Scanner, use it on everything around you. Every scan feeds the crafting system and unlocks new blueprints automatically.

Step 2 — Craft the Basic Fins and Standard Air Tank

Running out of oxygen is the number one cause of early death in Subnautica 2. The Standard Air Tank adds 30% more oxygen to your base supply. That extra breathing room makes cave exploration far less stressful and gives you more time to gather materials on each dive.

At the same time, craft the Basic Fins. They increase your swim speed and save a surprising amount of time on every trip. These two items are cheap to make and the difference they make is enormous. Equip both immediately after crafting them.

Both items are made in your Fabricator under the Personal menu using basic materials like Titanium and Fibrous Pulp that you will already be collecting.

Step 3 — Visit the Welcome Center and Unlock Biomods

The Welcome Center is a ruined facility located 85 meters southeast of your Lifepod. It is one of the first places you should visit after getting the Scanner and your basic survival gear sorted.

Inside, you will find a power slot. Place a Basic Battery into it to restore power to the entire facility. This activates the Bio Lab terminal inside, which lets you equip your first Biomods.

Biomods are interchangeable active and passive skill upgrades. Think of them as situational bonuses rather than permanent stat increases. For the early game, the two best Biomods to equip are:

• Dash (Active Skill): Lets you dash quickly in any direction. Useful for escaping predators and navigating currents.
• Oxygen Control (Passive Skill): Slows your oxygen consumption when you are not moving. Pairs perfectly with the Standard Air Tank upgrade.

You will eventually build your own Biolab inside your base and can swap Biomods whenever you want. So do not stress too much about the perfect choice right now — these two will serve you well through the early game.

While you are at the Welcome Center, scan the Habitat Builder on the nearby platform below a small opening. This unlocks the blueprint for the Habitat Builder tool, which is essential for base construction later.

Step 4 — Unlock the Digestion Adaptation at the Angel Comb

When you first land on Proteus, your character has a Hunger Intolerance. This means you cannot eat native fish or local plants yet. Your body simply cannot process alien proteins. Until you fix this, you are dependent on the limited food supply stored in your Lifepod — and that runs out quickly.

To fix this, you need to unlock the Digestion Adaptation. Travel 158 meters northeast of your Lifepod and look for the Angel Comb — a large glowing plant with a pink flower bulb. Interact with it to unlock the Adaptation permanently.

After unlocking Digestion, you can catch fish with your Survival Multitool or cut Fibrous Pulp from local plants and turn them into food in your Fabricator under the Sustenance menu. This makes you self-sufficient and removes one of the most stressful early survival pressures.

Note: The NOA Terminal in your Lifepod will eventually point you toward the Angel Comb as part of a blackbox mission. But you do not need to wait for that prompt — you can visit the Angel Comb and unlock Digestion at any time.

Step 5 — Craft the Flashlight and Habitat Builder

With the Scanner, Air Tank, Fins, Biomods, and Digestion Adaptation sorted, your next priority is crafting the Flashlight and the Habitat Builder. Both are made in the Fabricator under the Personal menu.

• Flashlight: The underwater caves in Subnautica 2 are genuinely dark. You will need this for any cave or deep-water exploration. It is not optional.
• Habitat Builder: This is the tool that lets you place base structures in the world. You physically hold it and aim at surfaces to build rooms, corridors, and equipment. Without it, base building is impossible.

By this point in the game you will have a solid sense of where materials spawn around your Lifepod. Gathering resources for both items should not take long at all.

Step 6 — Build Your First Base

Building a base is the most important milestone in early Subnautica 2 progression. It is the moment the game opens up properly. Your base gives you access to a full-size Fabricator, which allows you to craft advanced tools and electronics that the Lifepod’s basic station cannot make — including Wiring Kits and the Sonic Resonator.

For your first base, build somewhere shallow and close to your Lifepod. You do not need to go deep yet. Focus on getting these basics set up first:

• Full Fabricator — for crafting more advanced tools and electronics
• Storage Lockers — to store materials instead of carrying everything on you
• Bioreactor — generates 10 to 20 energy per second by burning Biofuel. Turn it on and off as needed to manage power.
• Biolab — lets you manage and swap your Biomods from inside your own base

Once these are in place you have a proper home base. Everything after this point builds on this foundation.

For more details on where to play and what platforms Subnautica 2 is available on, check our full breakdown: Subnautica 2 release date, platforms, price, and where to play. You can also learn more about the game directly at the official Subnautica website.

Step 7 — Scan Camp One and the Old Habitat for Blueprints

Two ruined locations near your starting area are packed with blueprint unlocks. Visit both of them after your base is up and running.

Camp One

Located roughly 250 meters north-northeast of your Lifepod. The hab has been torn apart but still holds several critical scannable items. Look for:

• Scanner Station
• Wakemaker Fragment
• Power Cell Terminal
• Painted Tree (decorative but worth scanning)

The Old Habitat

Located roughly 420 meters north-northwest of your Lifepod. This abandoned base holds more scannable equipment and unlocks additional blueprints for gear and base components. Check the datapads inside for story context too — they point you to other locations worth visiting.

The Wakemaker is a standout unlock from this area. It is a mobility gadget that boosts your swim speed without burning through as much energy as manually sprinting through water.

Step 8 — Visit Colonist Bunkers for Inventory Upgrades

Scattered around the starting region are underground structures called Colonist Bunkers. These are small sealed rooms hidden beneath the seafloor. Inside, interact with the Biobed to receive a permanent inventory slot upgrade.

More inventory space means longer dives, more materials per trip, and fewer runs back to base. These upgrades are free and permanent — always grab them when you find a Bunker. Scan everything else inside the Bunker too, including any Bioreactor fragments you spot.

Step 9 — Upgrade to the High Capacity Air Tank

The Standard Air Tank is solid for the first phase of the game. But once you start exploring deeper areas, you will need the High Capacity Air Tank to stay down long enough to do anything useful.

To craft it, you need Plasteel Ingots, which require Lithium. Lithium is the first genuinely hard-to-find resource in Subnautica 2. Early in the game, the only reliable location is The Great Jaw — a massive creature found southwest of your Lifepod over the ocean floor drop-off. You swim into its open mouth to grab the lithium deposits before it closes on you.

Before you go, prepare properly:

• Bring Air Bladders as backup oxygen — they let you surface quickly if things go wrong
• Have the Basic Fins and the Wakemaker equipped — you need to move fast
• Bring the Dash Biomod active — useful if you need to escape in a hurry

You only need one Plasteel Ingot to craft the High Capacity Air Tank, so one successful trip to The Great Jaw is enough to get what you need. Once you unlock the Heat Tolerance Adaptation later in the game, the volcanic vent caves below the Tadpole Pens will provide much easier access to lithium in larger quantities.

Step 10 — Unlock the Rebreather

As you push deeper into Subnautica 2’s ocean, you will notice your oxygen depletes faster below a certain depth. This is a built-in pressure penalty the game adds for deep diving. The Rebreather removes it entirely.

Scan the Rebreather blueprint fragment while exploring wrecks and ruined facilities. Then craft it from your base Fabricator and equip it alongside your High Capacity Air Tank. Together, these two items give you a genuinely comfortable deep-water oxygen setup — you will last much longer on each dive and feel far more in control at depth.

Step 11 — Build the Tadpole Submarine

The Tadpole is Subnautica 2’s early-game submarine and one of the most satisfying unlocks in the progression path. It dramatically expands what you can explore, how far you can travel, and how many resources you can bring back in a single run.

Scan Tadpole fragments while exploring the world to unlock the blueprint. Once you have it, build the Tadpole from your base using the materials the Fabricator lists.

The first upgrade worth adding to your Tadpole is the Cavitation Muffler. This makes the submarine significantly quieter and reduces the risk of attracting large predators — including leviathan-class creatures — during deep exploration runs.

With the Tadpole in the water and your base fully operational, you have completed the early game progression path. You are now ready for mid-game biomes, deeper resource gathering, and the next wave of story beats.

Subnautica 2 Best Early Upgrades — Priority Order at a Glance

• 1. Scanner — Your first and most important tool. Unlocks all blueprints.
• 2. Basic Fins — Faster swimming from the very start. Cheap and essential.
• 3. Standard Air Tank — 30% more oxygen. Prevents constant drowning deaths.
• 4. Biomods: Dash + Oxygen Control — Unlock at the Welcome Center early on.
• 5. Digestion Adaptation — Interact with Angel Comb (158m NE). Lets you eat native food.
• 6. Flashlight — Required for any cave or deep water exploration.
• 7. Habitat Builder — Unlocks base construction. Transition point to mid-game.
• 8. First Base — Full Fabricator, storage, Bioreactor, Biolab. Build near Lifepod.
• 9. Wakemaker — Mobility gadget. Scan the fragment at Camp One.
• 10. Inventory Upgrades — Interact with Biobeds in Colonist Bunkers.
• 11. High Capacity Air Tank — Needs Lithium from The Great Jaw. Major oxygen upgrade.
• 12. Rebreather — Removes deep-water oxygen penalty. Essential for deeper biomes.
• 13. Tadpole Submarine — Scan fragments and build. Opens the full mid-game map.

Final Tips Before You Dive In

A few things worth keeping in mind as you work through this progression path:

• Follow the NOA Terminal signals. The Noetic Advisor in your Lifepod pings you with blackbox locations. These align with the progression path and often reward you with story context, materials, and upgrade opportunities.
• Scan duplicates for Titanium. If you scan an item you already have the blueprint for, the game rewards you with a free piece of Titanium as compensation. Never skip a scan.
• Don’t ignore the Biobeds. Every Colonist Bunker you find has a Biobed that gives you a permanent inventory slot. These are easy to miss and very easy to walk past.
• Subnautica 2 is Early Access. The game launched on May 14, 2026, and will continue to expand with new biomes, creatures, vehicles, and story chapters. The progression path above reflects what is available now and will be updated as the game grows.

Ready to jump in? You can grab Subnautica 2 on Steam, play it through Xbox Game Pass, or learn more about the full game at the official Subnautica website.