Open a Hex editor Open the file Origin Games\Dead Space 3\dlc\map_epilogue\map_epilogue.viv in the hex editor Search for the hex value 99 8B C5 45 5C 69 E8 21 57 53 31 57 50 52 49 43 Replace it with FC 64 91 33 05 55 C8 7F 50 52 49 43 45 32 30 36 Save the file.

Now when you click play Downloadable Content in game, the game will load into the Consumer Demo