Quake - E2M7 - The Underearth [100%, Nightmare, No commentary]

Quake level playthrough, single segment (no reloads), all kills and all secrets, on nightmare difficulty, no commentary.
The Underearth is the seventh and Secret Level of The Realm of Black Magic. The exit is very close to the start, yet players will have to "go for a swim" in the nearby river first. An underwater passage leads to the rest of the level. It's composed of many types of areas - moss-covered caverns, castle-like hallways, and dark crypt-like passages. Numerous slime pits threaten the unwary and there are a few more unusual traps as well such as nail traps.
This level brings back Scrags. The player must search for the Gold Key in order to proceed. This is the hardest level of the Realm of Black Magic, as there is a great amount of enemies and a lesser number of supplies, like the later episodes will have.
The level contains another Easter Egg - a hidden room with a logo and the initials of Tim Willits and Theresa Chasar in it.