Act 2 in Baldur’s Gate 3 officially starts when you first enter the Shadow‑Cursed Lands , which also unlocks the achievement “The Plot Thickens” (your save file will then show Act 2).

Where Act 2 Actually Begins

  • Act 2 begins not at the Mountain Pass itself, but when you load into the Shadow‑Cursed Lands area for the first time.
  • You’ll know it’s official when:
    • Your save file label changes to Act 2.
* You earn the achievement **“The Plot Thickens”** (“Leave Act One – for somewhere altogether darker”).

A good in‑world landmark is that your first major safe hub is usually Last Light Inn , found shortly after arriving in the Shadow‑Cursed Lands.

How You Get Into Act 2

There are two main routes that funnel you into the Shadow‑Cursed Lands (and thus into Act 2):

  1. Through Grymforge / Underdark route
    • Travel to the Duergar Camp at the Underdark Beach.
 * Take the **boat to Grymforge**.

 * From Grymforge, use the **elevator** near the dock that leads up into the **Shadow‑Cursed Lands**.
  1. Through the Mountain Pass route
    • Head to the Mountain Pass area from the overworld in Act 1.
 * Progress through until you transition into the **Shadow‑Cursed Lands** ; that transition is what flips you into Act 2, not simply stepping into the pass.

Some forum posts and older discussions claim Act 2 starts “at Mountain Pass” or “at Moonrise Towers,” but more precise guides agree that the act line is the Shadow‑Cursed Lands load‑in plus the achievement trigger.

Before You Cross Into Act 2

Because entering Act 2 can lock or alter some Act 1 content, players often recommend a checklist feel:

  • Clear Goblin Camp / Emerald Grove outcomes the way you want, since advancing too far into Act 2 can close off the grove and its tiefling NPCs.
  • Finish any Act 1 side quests that matter to you (companion arcs, vendors, unique loot).
  • Aim for around level 5–6+ before committing, as Shadow‑Cursed Lands encounters jump in difficulty and assume you’ve done most of Act 1.

On many first playthroughs, players hit the Act 1–2 transition somewhere around 40–60 hours in , depending on how completionist they are.

Forum & “Latest News” Vibe Around This Question

This “bg3 when does act 2 start ” question is a recurring topic in 2024–2025 community threads because:

  • The game never pops a big on‑screen banner saying “Act 2” the moment you cross, unlike some older cRPGs.
  • The existence of two routes (Mountain Pass vs Underdark/Grymforge) makes some players think they’re “missing” a canonical entrance.
  • Players often worry they’ve gone too far and locked themselves out of Act 1 quests , leading to advice posts that stress “finish your business before pushing deeply into Shadow‑Cursed Lands.”

One typical forum sentiment in mid‑ and late‑game threads is players realizing, hundreds of hours in, that they delayed or rushed Act 2 because they weren’t sure where it formally began.

Quick TL;DR

  • Trigger: Enter the Shadow‑Cursed Lands.
  • Confirmation: Save file shows Act 2 and you unlock “The Plot Thickens”.
  • Main hub: Last Light Inn shortly after arrival.
  • Routes: Via Grymforge elevator (Underdark) or through the Mountain Pass , but Act 2 only starts once you zone into the Shadow‑Cursed Lands themselves.

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