The Ravenshield mod is now open for testing/gaming at Shadow Squad server named Zombie mod beta tester. You can get more information on the mod by click here. You play the mod in waves. As a survival mode gameplay, once you're killed you stay killed until the next round. NOTE: All you need do to play the mod is to log in on Ravenshield MP (multiplayer) online and the files will be automatically downloaded on your computer.
Below are screenshots of the game.
Below is a short video of the mod.
Nice great mod for RVS gaming.