Blasphemy Sprite Swap:
TO INSTALL:
-unzip file
-navigate to your base gungeon folder, opening up the resources folder in it. (NOTE: -NOT- the resources folder in etg_data)
-simply throw the 'sprites' file inside this mod into gungeon's resources folder, it should install all textures.
NOTE: If this does not appear to work after one launch, close ETG and then make sure that there are not TWO 'sprites' folders in resources.