Dark and Darker resets its servers at the start of a new season to let all players tackle the latest content on an even footing and give everyone a chance to rise to the top of the leaderboards.
When these wipes happen, you lose access to all the progress you made in-game, including all your gold, items, and quests you completed. These wipes happen three to four times a year and give new players a chance to challenge the ranked leaderboard instead of being dominated by long-standing players. So, when is the next one?