These are two BloodGDX-ready addons: "Legends of Iconoclast: Scourge of Humanity" and "Legends of Iconoclast 2: Unfinished Business". All official patches/updates released before March 2018 are applied.
Instructions
Unzip the downloaded archive right into BloodGDX root folder. Launch BloodGDX, go to "New Game" -> "User Content" -> "Files" and find two lines highlighted in red: "LOISOH.ZIP:LOISOH.INI" (this is to play "Legends of the Iconoclast: Scourge of Humanity") and "LOI2UFB.ZIP:LOI2UFB.INI" (this is to play "Legends of the Iconoclast 2: Unfinished Business"). Choose one, and enjoy!
NOTE: None of the game files will be affected by such installation so you don't need to restart BloodGDX to play another addon as well as you should not be afraid of corrupting game files.
Credits
Many thanks to Dwayne Anderson, the creator of these two excellent addons.