Episode One feels boring... until E1M6, where enviroment starts to feel like Romero's Tech Gone Bad. Episode Four claims to take a place on Earth but overall maps are looking more like Doom 2 Hell. However, this is pretty good mapset.
Amazing textures but there is a problem about using this pack. Many patches have spaces in the end of their names (like pyr14 .png) and because of this they won't be shown properly in the actual game (and in any map editor except of Doom Builder 2).