http://store.steampowered.com/app/404590
Looks like an ARPG with 2-player co-op and a hardcore mode.
Steam wrote:Vikings – Wolves of Midgard takes you to the Shores of Midgard, a world based upon the mythology and history of the Vikings, but with a fantasy twist. Battle the fearsome Jotan, hordes of terrifying undead monstrosities and the beasts of Ragnarok, as you strive to survive the growing cold of Fimbulwinter.
Release Date: Early 2017
Steam wrote:Teamwork
Team up with a friend and journey to the Shores of Midgard together in an epic two player online co-op mode. Choose between four difficulty levels to suit your skills and talents. Do you dare attempt the unrelenting hardcore mode?
Announcement Teaser (US)
https://www.youtube.com/watch?v=zcTNV0Uz16Q