This level occupies the map slot MAP29. For other maps which occupy this slot, see Category:MAP29.
MAP29: Hell on Earth is the twenty-ninth map of the megawadScythe. It was designed by Erik Alm and uses the music track "Lady of the Snow by Symphony X". It is the ninth map of the third episode.
Between the dark brown building and the green building there is a hidden switch on the dark brown building which you need to shoot with your gun, it lowers a wall right next to you.
Once you gain access to the dark brown building which holds the red keycard, you should notice there is a opening where u can fall down but you should also see a manchubus with a bfg, what you need to do is run as fast as you can and land on the cave ledge that should be to your left.
Once you gain access to the yellow door building, raise yourself up with the elevator switch, now you have 3 path ways the one on the left has a soul sphere which is the secret, simply go get it or if u cant use the middle path and to your left are small openings where u can just fall down to the left path way area.