Factorio Forums

Played with a friend. He was a server. My friend got the achievement, but I didn't get it.

Per the Factorio Wiki:

In multiplayer, achievements can only be earned if the player has spent more than 50% of the time online.

You can “catch up” to the server by remaining connected for a few hours (or days….) and this will re-enable Achievements for the Client.

Previously

eugenekay, But I actually got this achievement in the game itself. It just didn’t show up on Steam.