Baldur's Gate 3 Guide: Best Builds, Quests & Romance Tips
Key Takeaways
- Class Builds: Invest 2 levels in Paladin for Smite—it scales with spell slots, not just level.
- Companion Quests: Complete Shadowheart’s quest before Act 3 to unlock the Spear of Night (a +2 weapon with no drawback).
- Romance: Approval thresholds are tighter than you think—gain +10 from camp events, but lose -5 from ignoring their personal missions.
- Walkthrough: Save the Grove first—it gives you 3 extra camp followers and a free hireling.
Best Class Builds for Baldur’s Gate 3
I’ve sunk 400 hours into BG3, and the biggest mistake I see new players make is ignoring multiclassing. The game rewards hybrid builds more than pure classes. Here are three builds that consistently crush Tactician mode:
1. The Smite Machine (Paladin 2 / Sorcerer 10)
- Why it works: Paladin’s Divine Smite uses spell slots. Sorcerer gives you 4th-level slots by level 7, meaning you can Smite for 5d8 radiant damage per hit.
- Key feat: Metamagic Quicken—cast Hold Person as a bonus action, then auto-crit Smite for 10d8.
- Stat priority: Strength 16, Charisma 16, Constitution 14.
- Real number: At level 8, you can one-shot a Minotaur (80 HP) with a crit Smite using a 3rd-level slot.
2. The Stealth Archer (Ranger 5 / Rogue 7)
- Why it works: Gloom Stalker Ranger gives +2 initiative at level 3. Thief Rogue gives an extra bonus action. Use both to fire two shots per round from stealth.
- Key feat: Sharpshooter (-5 to hit, +10 damage). At level 8, with Advantage from hiding, you hit 70% of the time.
- Stat priority: Dexterity 20, Wisdom 14.
- Example: In the Goblin Camp, I killed all three leaders without alerting anyone—10 turns total.
3. The Control Wizard (Wizard 12, Divination School)
- Why it works: Portent dice let you force enemies to fail saving throws. At level 6, you have 3 dice per long rest—enough to lock down two boss fights.
- Key spells: Hold Monster (paralyzes for 10 turns), Counterspell (auto-counters with Portent).
- Stat priority: Intelligence 20, Dexterity 14.
- Real number: In the final fight, I used Portent to make the Netherbrain fail its save against Otto’s Irresistible Dance—it never moved.
Companion Quests: Complete Guide
Every companion has a personal quest that affects their ending. Miss one step, and you lose their loyalty. Here’s the hard-won truth:
Shadowheart’s Quest: The Spear of Night
- Act 1: Get the Artefact from the Nautiloid (must pick it up before leaving).
- Act 2: In the Gauntlet of Shar, kill the Self-Same Trial statue—don’t skip it. This gives you the Spear of Night (+2 to hit, +1d6 radiant, no penalty).
- Act 3: Choose to spare the Nightsong. This unlocks a +2 shield and a permanent buff to Shadowheart’s Wisdom.
- Common mistake: If you let Shadowheart become a Dark Justiciar, she loses +2 Wisdom and becomes hostile to your party.
Astarion’s Quest: The Vampire Spawn
- Act 1: Let him bite you at camp—gives him +1 to attack rolls for 3 turns.
- Act 2: Find the Drow in Moonrise Towers. She offers a potion that gives him +2 Strength permanently. Let him drink it (no downside).
- Act 3: Kill Cazador in the Szarr Palace. Use Daylight spell—it deals 20 radiant damage per turn to him.
- Real number: Cazador has 150 HP. Daylight kills him in 8 turns solo.
Lae’zel’s Quest: The Githyanki Warrior
- Act 1: Help her fight the Githyanki patrol. If you lose, she leaves permanently.
- Act 2: In the Creche, steal the Inquisitor’s sword—it’s a +2 greatsword that ignores resistance.
- Act 3: Choose to free Orpheus. This gives you a +3 longsword and a permanent buff to all Githyanki in your party.
Romance Guide: How to Lock In Your Partner
Romance in BG3 is about timing, not just dialogue. Here’s the hard data:
- Approval thresholds: You need 40+ approval to trigger the first romance scene. Each companion has 5 approval events in Act 1. Miss one, and you’re behind.
- Key events:
- Shadowheart: At 40 approval, she asks you to share a bottle of wine. Say “I’d love to.”
- Astarion: At 40 approval, he confronts you about your intentions. Say “I want more.”
- Karlach: At 50 approval, she asks you to fix her engine. Say “I’ll do anything.”
- Act 2 lock-in: Each companion has a specific scene. For Shadowheart, it’s after the Shar temple. If you don’t talk to her before entering the Shadowfell, you miss it.
Comparison Table: Romance Difficulty
| Companion | Approval Needed | Missable Events | Difficulty |
| ----------- | ---------------- | ----------------- | ------------ |
| Shadowheart | 40 | 2 (Act 1 wine, Act 2 temple) | Medium |
| Astarion | 40 | 1 (Act 1 bite) | Easy |
| Karlach | 50 | 1 (Act 2 engine) | Hard |
| Lae’zel | 30 | 0 (linear) | Very Easy |
Complete Walkthrough: Act-by-Act
Act 1: The Grove & Goblin Camp
- Priority: Save the Grove first. If you talk to the goblins before defending the gate, the tieflings die.
- Key fight: The Goblin Camp has 30 goblins. Use the rafters to shoot from above—Astarion with Sharpshooter kills two per turn.
- Hidden loot: In the Underdark, find the Sussur Tree. Its bark gives you a +1 greatsword that silences enemies on hit.
Act 2: Moonrise Towers & Shadowfell
- Priority: Complete all companion quests before entering the Shadowfell. Once you enter, the game locks you out of Act 1 and 2 quests.
- Key fight: Ketheric Thorm has 200 HP and regenerates 20 per turn. Use Silence on him to stop his healing.
- Hidden loot: In the Gauntlet of Shar, solve the mirror puzzle (answer: “Shadow”). You get a +2 ring that gives +1 to all saves.
Act 3: Baldur’s Gate & Final Battle
- Priority: Do the Steel Watch Foundry first—it gives you a +3 crossbow and reduces enemy reinforcements by 50%.
- Key fight: The Netherbrain has 600 HP. Use Illithid powers to stun it for 3 turns—each stun deals 50 damage.
- Hidden loot: In the House of Hope, steal the Gauntlets of Hill Giant Strength (+2 Str, +1 to attacks).
FAQ
Q: What’s the best class for a first playthrough?
A: Paladin 2 / Sorcerer 10. It’s forgiving—you have heavy armor, healing, and burst damage. At level 5, you can Smite for 3d8 per hit, which one-shots most early enemies.
Q: Can I romance multiple companions at once?
A: Yes, but only until Act 2. After that, you must choose. If you try to keep both, one will break up with you at the start of Act 3.
Q: Is there a missable item that breaks the game?
A: The Spear of Night. If you don’t kill the Self-Same Trial statue in Act 2, you get a weaker version (-1 to hit, no radiant damage). It’s the only item that affects the final boss fight significantly.