Baldur's Gate 3 guide: Complete Quest Walkthrough

Master Larian Studios' RPG with this comprehensive Baldur's Gate 3 guide, covering main quests, companion stories, and essential location activities.

2026-08-10
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Baldur's Gate 3 is a complex, narrative-driven RPG featuring three distinct acts, multiple endings, and extensive companion storylines. This guide provides a structured overview of the main quest progression and side activity navigation.

Baldur's Gate 3 is a sprawling adventure that requires players to manage party dynamics, character builds, and tactical combat. As you journey from the initial Nautiloid crash to the final confrontation with the Elder Brain, the choices you make will dictate the world's outcome. Whether you intend to follow a lawful good path or explore the possibilities of playing an evil character, the game supports diverse gameplay styles.

If you are just starting your journey, it is highly recommended to familiarize yourself with the character creation process. Understanding the basics of Dungeons and Dragons mechanics—such as selecting classes, subclasses, races, and subraces—is vital to your survival in the early hours. For more granular detail on character optimization, you can consult our best builds and class guides.

The Main Questline

The main story of Baldur's Gate 3 is divided into three acts. Each act introduces new mechanics, challenges, and narrative revelations.

Prologue: Escape the Nautiloid

Your journey begins on a Mind Flayer ship. The "Escape the Nautiloid" quest serves as your introduction to movement, combat, and party management. During this sequence, you will also encounter potential companions, such as Shadowheart, whom you can choose to rescue.

Act One: Finding a Cure

Following the crash, your primary objective is to remove the parasite from your head. This phase involves exploring the region, meeting various NPCs, and deciding which factions to align with, such as the Druids' Grove. As you progress, the difficulty will increase, requiring you to learn and adapt to more complex combat encounters.

Act Two: Infiltrate Moonrise Towers

In the second act, the narrative branches significantly. Players can reach Moonrise Towers via the Underdark route or the Mountain Pass route. These paths provide different experiences but eventually converge. Success in this act requires careful navigation of the Shadow-Cursed Lands and confronting Ketheric Thorm.

Act Three: The Final Confrontation

The final act takes place in and around Baldur's Gate. This segment is characterized by intense boss battles and the culmination of your choices throughout the game. Key objectives include obtaining the Netherstones from Gortash and Orin, leading to the climactic battle against the Elder Brain. Be cautious, as the "All Endings" section of any walkthrough will contain significant story spoilers.

Companion Quests

A major component of the Baldur's Gate 3 experience is interacting with your party members. Each companion has their own unique questline that triggers automatically upon recruitment. By engaging with these characters, you can learn about their backstories and deepen your bonds with them.

The following companions have dedicated questlines:

  • Shadowheart: Daughter of Darkness
  • Astarion: The Pale Elf
  • Lae'zel: The Githyanki Warrior
  • Wyll: The Blade of Frontiers
  • Gale: The Wizard of Waterdeep
  • Karlach: Our Fiery Friend
  • Jaheira: The High Harper

Prioritizing these quests is essential if you want to influence the personal growth of your companions and uncover unique narrative outcomes. For more information on recruiting these allies, visit our dedicated companions page.

Side Quests by Location

Side quests are critical for understanding the lore of the world and often provide gear, weapons, and information that can make the main quest significantly easier. These activities are tied to specific geographical locations.

Nautiloid Crash Region

Focus on "Free Lae'zel" and "Explore the Ruins" to gain early experience and equipment.

Druids' Grove

Activities here, such as "Save the Refugees" and "Investigate Kagha," help shape the political landscape of the first act.

Underdark

The Underdark is home to challenging encounters and unique loot, including quests like "Find the Mushroom Picker" and the search for the Adamantine Forge.

Githyanki Crèche

Players interested in Lae'zel’s history should explore the Crèche, where you can undertake tasks like "Steal a Githyanki Egg" or seek out the Blood of Lathander.

Shadow-Cursed Lands

These quests, including "Rescue Wulbren" and "Investigate the Selûnite Resistance," are vital to overcoming the environmental hazards of the region.

Baldur's Gate City

The final act features a dense collection of side content, such as "Free the Artist," "Help the Cursed Monk," "Retrieve Omeluum," and "Save Hope." Each of these contributes to the richness of the city's lore and provides potential rewards for the final battles.

Tactical Advice for New Players

  1. Explore Thoroughly: Many hidden items and quest triggers are located off the beaten path. Always check your interactive map for points of interest.
  2. Save Often: Given the complexity of the game, saving before major dialogue choices or difficult combat encounters is a standard practice for many players.
  3. Experiment with Mechanics: Baldur's Gate 3 offers multiple ways to solve problems. If a combat encounter feels impossible, consider using the environment, height advantage, or different spell combinations.
  4. Manage Your Party: Ensure your party composition is balanced. Having a mix of martial and magical classes is generally advised for tackling the variety of threats found throughout the three acts.

For those looking to challenge themselves, consider attempting an honor mode playthrough once you are comfortable with the game's systems.

Source-aware planning notes

Use this page as a practical starting point, then keep a written checklist for the route you are following. Separate a confirmed step from a choice that depends on your party, difficulty, or current patch. When the collected pages disagree, prefer the narrower statement and record what remains uncertain rather than filling the gap with a guess. A short save before a major decision makes it easier to compare outcomes without treating any one community route as universal. Use the article's headings as a worksheet: write down the confirmed premise, the next action, and the point at which you need to verify a newer source. This approach keeps the guide useful for a first pass while making its limits visible. It also prevents a concise community summary from being mistaken for a complete rulebook. When you adapt the advice to a different party, difficulty, platform, or patch, preserve the original wording and add your own observation separately. A careful note is more valuable than a confident detail that the collected evidence cannot support.

FAQ

How many acts are there in Baldur's Gate 3?

There are three acts in total. Each act contains specific main story goals and various side quests that influence the final ending.

Can I play as an evil character?

Yes, playing an evil character is fully supported. You can choose dialogue and action options throughout the game that contradict the standard "lawful good" narrative path.

How do I start companion quests?

Companion quests are passive and start automatically once you recruit a character into your party. They will appear in your Journal as you progress through the story and interact with them.