Oddly enough, IDCLIP and IDCLEV work. You can't activate any doors or switches, but you can beat E1M8 with No Clipping Mode. Then you're stuck at the "Orderin

Oddly enough, IDCLIP and IDCLEV work. You can't activate any doors or switches, but you can beat E1M8 with No Clipping Mode. Then you're stuck at the "Ordering Info" screen with no way to activate the menu.