Prey 2 will not have multiplayer and focus on single player, but why leave the online aspect out. In infamous 2 you can make your own challenge or mission and share it online. Well why not have something similar in prey 2.
You could make your mission, kill , capture, what ever
Choose alien and custimize alien.
Choose name of alien and client
Awards
And basically the things you can do in infamous 2
Any other ideas for online for prey 2 post here