Source-checked
Confirmed
- Steam lists Online Co-op.
- Official notes refer to multiplayer lobbies and Quick Entry in supported content.
No guesswork
Not confirmed
- The checked official sources do not state one story chapter, account level, or quest that universally unlocks co-op.
- The checked official sources do not confirm that the full story or open world is co-op enabled.
Do this first
Fast checklist
- 01
Install the current update.
- 02
Open the activity you want to run.
- 03
Check for its current multiplayer marker or lobby option.
- 04
Create a lobby, join one, or choose Quick Entry when available.
- 05
Read the live player slots before inviting friends.
Why this is not a chapter-number guide
A precise unlock number would be useful only if the developer published it. The sources we checked confirm Online Co-op but do not define a universal unlock requirement. Publishing an invented chapter or level would make the guide less reliable than the current in-game activity label.
The practical way to find supported content
Choose the activity first, then inspect its live multiplayer marker and lobby. If there is no multiplayer option, do not assume it can be unlocked by changing a setting. Recheck after major patches because availability and labels can change.
Quick answers
FAQ
What level unlocks co-op?
The official sources checked do not give a universal level or story requirement. Use the multiplayer marker on the activity you want to enter.
Does Online Co-op unlock the whole campaign?
No official source checked confirms that. Treat co-op availability as activity-specific unless the live game and official notes state otherwise.
Proof, not vibes
Sources
LevelLime is an independent guide. It is not affiliated with Hound13 Inc., Valve, or Steam. Community posts can inspire questions, but the factual claims above are checked against the linked official sources.