本補丁為幽浮未知敵人的三號升級補丁，已包含破解補丁在內，并集成了兩款DLC內容(Slingshot & Elite Soldier Pack)，注意需要先安裝1號升級檔，玩家可下載本補丁對游戲進行升級。

使用說明

1、解壓縮
2、安裝升級補丁到游戲目錄覆蓋
3、運行游戲

by FLTDOX

更新內容：

- Second Wave addition (gameplay details in the press release)
- If a player has beaten the game, they can access a variety of gameplay
toggles upon starting a new game. The Second Wave option will be availab
on the New Game menu.
- AI teleport bug fix
- Minimizes the bug where aliens teleport into the middle of a player's sq
- Defeat screen when beating the game
- Minimizes a bug that displays a Defeat screen after winning the game
- Chris Kluwe as XCOM Hero unlock.