1、解压缩
2、安装Update目录下的升级补丁到游戏目录中
3、复制CODEX目录下的未加密补丁到游戏目录中覆盖
4、运行游戏

更新说明：

Update 1:
Settings options:
Added Vsync option in Settings.
Additional keyboard mappings: CONTROL for crouch, Left SHIFT for running.
Fixes:
Fix for player letting go of the ledge if pause menu is deactivated (via keyboard - Escape key or controller back button).
Fix for game menus appearing off-screen on ultra-wide monitors.
Fix for the resolution not changing when selecting a new value with the same width but different height.
Fix for the resolution values displaying incorrectly if closing the game (Alt-F4) while in the settings menu and then restarting the game.
Fix for input not being received from additional connected controllers.
Fix for the EyeSentry getting stuck on the player when running rapidly in and out of cover.
Fix for the EyeSentry in Revolution, when you bypass the bus sequence by breaking the EyeSentries with the designator

By CODEX