This fixes the Chapter 6 bug, where I left a door unlocked and players sometimes fell through the map if they kept walking past the door.
I also added a feature where you can reset your progress/unlock all of the chapters within the game. Some updates will wipe a player's save data, so adding this feature would be beneficial to players who have already completed the game and would like to revisit specific chapters.
(The Russian localization for the feature will be added sometime tomorrow, after I receive the translated document!)
This patch also includes minor bug fixes, etc.
I'll try to add Steam achievements during the latter half of November next month.