I tried the multiplayer mode for this game today and while technically we managed to connect to the same server, the game would be broken for the host consistently, regardless if it's free mode or campaign.

At level 1 the players are meant to spawn at the refugee camp, but the host spawns in Silverfall city while others do appear in the refugee camp. On top of that, when another player joins the server, the game locks up for the host and stops accepting any input. It does an automatic running animation and stops after a while, it feels like it's trying to initiate the first story dialogue in refugee camp, but the character is in the wrong map, so the game just locks up.

I never experienced that in my retail version.

Does anyone have any clue what might be causing this problem and how to fix it?

*EDIT*

Figured it out.
It was pretty unintuitive, but when you start a campaign multiplayer session you have a fast travel point unlocked to the refugee camp. You have to fast travel there before anyone else connects and have the first scripted dialogue initiate properly, otherwise the game locks up.