本補丁為黑暗潛伏者的4號升級補丁，已集成破解補丁在內，此次小范圍更新主要新增了兩張挑戰地圖。注意先要先安裝3號升級檔：

安裝方法

1、解壓縮
2、安裝Update文件夾下的升級補丁到游戲目錄
3、復制Crack文件夾下的破解補丁到游戲目錄
4、運行游戲

by machine4578.

更新內容

We have just released a patch that brings a variety of small gameplay improvements. And because we had such fun watching your challenge map speedruns, we found it to be a good idea to also include two new challenge maps in this update.

So next time you fire up the game, sink your teeth into these new maps:

- Cryogenic Plaza
- Backyard.