Intelligence Agency has learned that the nazi Germans developing based on new air apparatus "Helicopter" combat prototypes, which can destroy armored vehicles and infantry. Are you an agent resistance which had the task to destroy important person of the Third Reich. Now your mission is even more difficult and more important to find real evidence and documentation of the project before military prototypes apply in practice.
To play Vendetta version 1.3 you must own legit Return to Castle Wolfenstein copy to play the addon, cd or steam-version without any mods.
Installiation: place all files in Return to Caste Wolfenstein folder, example for steam-version X:\Steam\steamapps\common\Return to Castle Wolfenstein
Run game with original launcher Vendetta.x86.exe or Vendetta.x64.exe due your version of OS Windows.
The file autoexec.cfg contains important settings, if you do not know about them, do not change anything.
To have English translation of the game, place "sp_pak9.pk3" into the Main folder of game.