This tiny update fixes an issue in the Jail map in the explorer mode, which made it impossible for some users to unlock Achievement #27.
Achievement #27 is supposed to unlock when you finish the comedic "fetch quest" in the explorer-mode, which is available after completing Chapter 3.
If you've already completed the quest, it's repeatable, so after you update, you should be able to unlock the achievement simply by doing the quest again.
This should now function correctly for all players.
We're committed to fixing any problems that players encounter; if you see any, please let us know! This post has some more info:
https://steamcommunity.com/games/1547290/announcements/detail/2961663293020658943