Halsin only properly joins your party (not just your camp) in Act 2 of Baldur’s Gate 3, and you need to follow his full quest chain and avoid certain “evil” choices for it to work.

How to get Halsin to join your party (BG3)

1. Step‑by‑step checklist (Act 1 → Act 2)

In Act 1 – Emerald Grove & Goblin Camp

  1. Rescue Halsin from the Goblin Camp
    • Go to the Shattered Sanctum in the Goblin Camp.
 * Past Priestess Gut’s throne, take the wooden bridge on the right and enter the **Worg Pens**.

 * Free the bear (that’s Halsin) and help him kill the goblins.
  1. Side with the Grove, not the Goblins
    • Halsin asks you to kill the three goblin leaders (Gut, Dror Ragzlin, and Minthara).
 * Do this and **save the Emerald Grove** ; don’t help Minthara raid the Tieflings.
  1. Attend the victory party at camp
    • After the goblin leaders are dead and the Grove is saved, Halsin will come to your camp celebration.
 * He will say he’s stepping down as First Druid and asks to travel with you. **Accept** when he offers to join your journey.

 * At this stage, he’s a **camp follower** , not yet a selectable combat companion.

2. Act 2 – Last Light Inn & “Lift the Shadow Curse”

To turn Halsin from camp follower into a full party member, you must progress his Shadow‑Curse storyline in Act 2.

  1. Reach Last Light Inn (Shadow‑Cursed Lands)
    • Enter Act 2 via Mountain Pass or Underdark and find Last Light Inn.
 * Halsin will be there, focused on the Shadow Curse and a mysterious spirit named **Thaniel**.
  1. Start “Wake Up Art Cullagh”
    • Talk to the Flaming Fist leadership / refugees to unlock the quest “Wake Up Art Cullagh.”
 * You’ll learn about a comatose man, **Art Cullagh** , linked to Thaniel.
  1. Get Art’s lute from the House of Healing
    • Go to the House of Healing in the Shadow‑Cursed Lands.
 * Defeat **Malus Thorm** and loot **Art Cullagh’s lute** from his body.
  1. Wake Art & trigger Halsin’s ritual
    • Return to Last Light Inn , give the lute to Art, and use it to wake him up.
 * Art tells Halsin he must find **Thaniel** , which prompts Halsin to ask you to meet him by the lake to **“Lift the Shadow Curse.”**
  1. Defend Halsin in the portal sequence
    • At the lake, Halsin opens a portal and enters to find Thaniel while you defend the portal from waves of enemies.
 * Survive the attacks until Halsin emerges carrying **Thaniel’s body**.
  1. Finish with Halsin at camp
    • After the ritual, Halsin takes Thaniel back to camp.
 * Return to **camp** , talk to Halsin, and exhaust his dialogue; he will finally offer to join you as a full **active companion** that you can add to your 4‑person party like any other origin character.

3. Things that can block Halsin from joining

There are a few “trap” choices and missed steps that can permanently (or effectively) lock Halsin out as a companion in that playthrough.

Hard or soft locks

  • Siding with Minthara / raiding the Grove
    • If you help Minthara attack the Grove, you typically lose Halsin as a companion option in a normal run.
* Older info said you couldn’t recruit both Halsin and Minthara at all, but **Patch 5** added a niche path where you can non‑lethally knock Minthara out and still side with Halsin; this requires careful handling and is easy to mess up.
  • Not reviving Art Cullagh
    • If you never bring Art his lute and never wake him , Halsin will stay by his bedside at Last Light Inn, waiting for him to wake up.
* In that case, he never progresses to the Thaniel ritual and **won’t join your party**.
  • Major “evil” decisions
    • Halsin is coded as a “good‑aligned” companion , so a run full of very cruel or villainous choices in Act 1 can make it unlikely he’ll travel with you.
* The biggest one is consistently siding with the Absolute cult and Minthara over the Druids and Tieflings.

4. Quick HTML table: key steps & pitfalls

Below is an HTML table version, as requested by your rules.

html

<table>
  <thead>
    <tr>
      <th>Stage</th>
      <th>What to do</th>
      <th>Why it matters</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Act 1 – Goblin Camp</td>
      <td>Rescue Halsin from the Worg Pens in the Shattered Sanctum and kill the surrounding goblins.</td>
      <td>Starts Halsin’s involvement and lets him later move to your camp after the Grove is saved. [web:1][web:3]</td>
    </tr>
    <tr>
      <td>Act 1 – Grove outcome</td>
      <td>Kill all three goblin leaders and save the Emerald Grove; do not help Minthara raid the Tieflings.</td>
      <td>Marks you as “aligned” with Halsin and unlocks his post‑victory camp party scene. [web:1][web:3]</td>
    </tr>
    <tr>
      <td>Act 1 – Camp party</td>
      <td>Attend the celebration at camp, talk to Halsin, and accept his offer to travel with you.</td>
      <td>Makes Halsin a camp follower (but not yet an active party member). [web:1][web:3]</td>
    </tr>
    <tr>
      <td>Act 2 – Last Light Inn</td>
      <td>Reach Last Light Inn in the Shadow‑Cursed Lands, speak to the Fist/refugees to start “Wake Up Art Cullagh.”</td>
      <td>Links Halsin to Art and Thaniel, opening his main Act 2 quest chain. [web:1][web:3]</td>
    </tr>
    <tr>
      <td>Act 2 – House of Healing</td>
      <td>Go to House of Healing, defeat Malus Thorm, and loot Art Cullagh’s lute.</td>
      <td>The lute is needed to wake Art, which is mandatory for Halsin’s progression. [web:1]</td>
    </tr>
    <tr>
      <td>Act 2 – Wake Art</td>
      <td>Return to Last Light Inn, use the lute to wake Art Cullagh, then speak with Halsin.</td>
      <td>Art tells Halsin about Thaniel and triggers the “Lift the Shadow Curse” ritual. [web:1][web:3]</td>
    </tr>
    <tr>
      <td>Act 2 – Lift the Shadow Curse</td>
      <td>Meet Halsin by the lake, defend the portal and Thaniel while Halsin is inside.</td>
      <td>Completing this sequence lets Halsin retrieve Thaniel and move the quest to its final stage. [web:1][web:2][web:3]</td>
    </tr>
    <tr>
      <td>Act 2 – After the ritual</td>
      <td>Go back to camp, talk to Halsin, and exhaust his dialogue options.</td>
      <td>He finally becomes a full recruitable companion, selectable in your 4‑person party. [web:1][web:3][web:8]</td>
    </tr>
    <tr>
      <td>Potential lock – Minthara route</td>
      <td>Siding with Minthara to destroy the Grove or fully embracing the cult path.</td>
      <td>Usually blocks Halsin; only complex Patch 5 non‑lethal setups can keep both, and are easy to fail. [web:1]</td>
    </tr>
    <tr>
      <td>Potential lock – Ignoring Art</td>
      <td>Never bringing Art his lute, leaving him unconscious at Last Light Inn.</td>
      <td>Halsin stays with Art instead of completing his quest, so he never joins your party. [web:1][web:5]</td>
    </tr>
  </tbody>
</table>

5. What Halsin brings to the party

Once recruited, Halsin joins as a Druid companion you can respec at Withers like others.

  • Default role : He’s a powerful support / control character with strong healing, buffs, and battlefield control spells if you keep him as a caster druid.
  • Alternate builds : As a Circle of the Moon shapeshifter he can become a very tanky front‑liner, while Circle of the Land/Spores push him into a more spell‑heavy role.

If you tell me what act you’re currently in and what you chose at the Grove, I can pinpoint exactly which step you’re missing or whether your run has locked him out.

Information gathered from public forums or data available on the internet and portrayed here.