This page of our Undecember guide explains how long the game is. This refers both to the game's demo and the full release, launching on October 12, 2022.
The Undecember guide is based on the Steam Next Fest 2022 demo. It is up to date as of October 6, 2022.
The game has potential to be extremely time-consuming for hack and slash fans. The gameplay model can be compared to Path of Exile - an extensive singleplayer campaign (including boss fights and miniboss fights) as well as multiplayer. Adding respawning enemies and complex in-depth character customization, fans of the genre may end up spending dozens of hours playing the game.