Endgame Progression Guide

Survive Against Leviathans

A Collector Leviathan inhabits the stretch of water going to the Alien Ruins. In order to get there, you must be able to avoid it. Make sure to have the Scout Chasis on your Tadpole in order to outrun it.

Learn About the Other Leviathans

There are only a few Leviathans in Subnautica 2 right now. Learning about each one will be helpful to survive or co-exist with them.

Explore the Alien Ruins

The Alien Ruins is a new region with new locations, materials, and flora and fauna. Exploring the new region will lead to new discoveries that can help you progress.

Find New Tech

In the Alien Ruins, You can find the highest tier of upgrades and tech available in the current state of the game. This includes new Alien upgrades for your tools!

Collect New Materials

There are also new materials that you can collect in the Alien Ruins. Having a good stock of them and learning where to find them will make building and crafting easier.

Build Base in Alien Ruins

It's recommended that you set up a base in the Alien Ruins as soon as you can. This will negate the need to cross the chasm again and again just to get back to your base. This will also prevent any further contact with the Collector Leviathan.

Place Down Necessary Structures & Systems

Focus on building the necessary structures in your base first. Crafting stations, as well as Battery stations & Tadpole docks should be your top priority once you've set up your base.

Once you've unlocked the Modification Station, build it as soon as you can since it's required to modify and upgrade tools.

Item	Description
Modification Station	Create upgrades for your vehicles and more [Recipe] - Titanium x 2 - Celestine x 2Copper x 2

Upgrade Your Tadpole

Increasing your Tadpole's maximum depth is a must in order to fully explore the Alien Ruins. Locate the Tadpole Depth Module Mk. 1 to increase it to 450m! Make sure to also place Tadpole Upgrade Modules.

Item	Details
Tadpole Depth Module Mk. 1	Increases Tadpole max depth to 450m [Recipe] - Celestine x 3 - Enameled Glass x 2 - System Chip x 1
Strike Armor	Increases Tadpole durability [Recipe] - Enameled Glass x 2 - Strontium x 2
Engine Efficiency	Reduce Power use of the Tadpole [Recipe] - Titanium Ingot x 1 Glass x 2 System Chip x 1
Photovoltaic Charger	Charges the Tadpole when in shallow waters during daytime [Recipe] - Copper Ingot x 1 - Strong Acid x 1 - Troilite x 1

Upgrade Tools & Equipment

As you explore, scan tools and other items in order to unlock them. Some upgrades that you can find here are even tied to the progression of the game's story so make sure to build them as soon as you can.

Modify Important Tools

There are upgrades for the Scanner and the Sonic Resonator that can be found in the Alien Ruins. Work to unlock them as soon as possible since they're necessary to progress through the story.

Tool	Description
Bioscanner	Scans Axum Technology and Protean biology [Recipe] - Scanner x 1 - Enameled Glass x 2 - Conduit Crystal x 3
Feedback Resonator	Modified sound amplifier [Recipe] - Sonic Resonator x 1 - Enameled Glass x 2 - Conduit Crystal x 2 - Strontium x 2

Get Upgrades for Fins & Tank

Another notable upgrade that can be found are the advanced Fins and Air Tank. Although you have the Tadpole, having upgrades for this will allow you to explore through the new region more easily.

Tool	Description
Improved Fins	Upgrade to the Basic FinsBasic Fins x 1 - Fiber Mesh x 1 - Conduit Crystal x 2
Ultra High Capacity Air Tank	Current highest upgrade to max Oxygen [Recipe] - High Capacity Air Tank x 1 - Troilite x 3 - Atacamite x 3

Collect All Biomods

Biomods unlock special effects or abilities for your character. You have likely unlocked a few of them at this point. In the endgame, you can push to unlock all Biomods available!

Complete the Current Story

Since Subnautica 2 is still in early access, it's story is not yet finished and will have more as the updates roll in. Currently, the story ends once you open the observatory.

Learn the Alien Language

Story-wise, your goal is to unlock the Alien observatory and learn its secrets. One of the major goals is to learn the Alien language, which you can do by clearing the infection of the Angel Comb in the area.

Fix the Power Plant

Next, fix the Power Plant in order to power the doors to the Observatory. This will require a number of materials. It's best to start collecting them even before you get to this part.

Open the Observatory

Lastly, open the Observatory. There you will be able to learn more about the Aliens and you will get to the current end of the main story.

Prep for Next Updates

There is no news yet when the next update will be, but you can start preparing for what's next. Stock up on materials, have a good supply of food, and fix up your base!