[2020] Help me understanding this game

Game is primarily intended for 1-8 player co-op; with a slight skew towards 6 at most. This is NOT a game meant for huge amounts of players on a single server, and indeed the game cannot handle more than 8~ players in most environments. 8 is the maximum officially supported, 16 is the maximum allowed by the ingame menu; for people who have beefy rigs that can handle it.

So just you and a friend is perfectly okay. :)

You and your friend will likely have a long trek at the start to meet up with each other on a large map. Be sure to be allies and in a party so you can track each other’s location, and make the most of the journey by noting interesting locations along the way.