This credits the textures used in the following maps:
4all, B1ooDv3/4, Dung3on

b1ood_wall_rock - https://jooinn.com/black-wall-texture-5.html
wezu_wall - https://opengameart.org/content/old-wall-texture-w-normalheight
n3b_metal - https://opengameart.org/content/seamless-metal-door-texture