E3M3: The Tomb of Terror

The Tomb of Terror is the third level of The Netherworld. True to its name, the level resembles a tomb and the action takes place almost entirely indoors. Many of the rooms contain deadly Lava and traps, and the dark hallways are patrolled by numerous hostile creatures.

This level brings back the Death Knight. The player must search for the Silver Key in order to proceed. The player must return to the starting room twice while travelling through this small level.

Quick Level Completion

 * Go through one of the corridors and press the Button on the opposite side of the starting wall.
 * Return to the start and go through the Door to the left.
 * Follow the corridor to a Floorplate to push.
 * Follow the corridor, ignoring the dead ends by taking the first right.
 * Go up the stairs of the Water room, and follow the corridor to an Elevator.
 * At the top, follow the corridor to another Button.
 * Follow the newly risen platform to another Button.
 * Go to the newly risen platform on the left and press another Button.
 * Repeat for the right.
 * Return to the middle and follow the newly risen platform to a Teleporter.
 * Go up the stairs and turn around, then jump on the railings to get to the next corridor.
 * Follow the corridor to the Silver Key and a Teleporter to go through beside.
 * Turn left and go through the Silver Door.
 * Follow the corridor to a Button.
 * The wall across the Lava to the right will open, follow the newly opened corridor to another Button inside.
 * Return to the middle section of the nearby stairs and go through the newly opened Door to get to the exit room.

Walkthrough
Kill the Ogre patrolling on the right passageway. Collect a 25 Health to the right, and Shells and Nails to the left. The Door to the left is the Silver Door, and the right Door is locked. The stairs straight ahead are Barred off, so go instead on one of the two passageways by the stairs. Press the Button behind the stairs to open the right Door. Go through the Door, kill the Death Knight, and collect the Yellow Armor. Turn left, collect the two 15 Health, and press the Floorplate by the Lava to raise stairs over it for a limited amount of time. At the top of the stairs turn right and look up to shoot a Button (#1) . Continue into the next corridor and collect the Super Nailgun at the intersection. Kill the Zombie and collect the Shells to the left. Collect a 25 Health and Rockets at the dead end straight ahead. Follow the left passageway to another intersection, and turn left to a 25 Health, Nails, and 3 Zombies. Continue into the next room and kill the Death Knight. Collect the Shells to the right in front of some stairs, and 2 Nails to the left of the stairs. Drop into the Water and swim under the stairs to collect a 100 Health (#2) . Climb the stairs and turn left while collecting the Rockets. Turn left at the end and go up an Elevator. Turn left again at the top and kill 3 Zombies while avoiding the 6 Nail Traps in the floor. At the end of the hall collect the two 15 Health and turn left. Turn right at the bottom of the stairs and collect the Nails while going into the next room. Kill the Scrag floating in this round Lava room. Press the Floorplate to raise a bridge leading to the central platform of this area, and collect a 25 Health to the left. Cross to the middle platform, press the Floorplate, and collect the Shells. 2 Zombies will spawn on the starting platform as the bridges raise to the left and right platforms. Press the Floorplate on each side, but be careful of the Large Wall Spike. Collect the Rockets on the left platform, and the Nails on the right. When the first Floorplate is pressed a Scrag spawns, and when the second is pressed the bridge is raised to the final platform of this room. As you head to the platform 2 Zombies spawn. Collect the two 25 Health on the final platform, one to the left and one to the right, and go through the Teleporter to return to the start. The Bars blocking the stairs will slide back, allowing access up the stairs. Collect the 100 Health at the top. Kill the Death Knight on the platform behind you, then use one of the railings of the stairs to get to the corridor the Death Knight was in. Press the Floorplate in the corridor to raise a bridge across the Lava straight ahead. Dodge the 4 Nail Traps in the Lava room, and continue into the corridor beyond. Beware as this platform is timed and will slide back in a short amount of time. Drop down at the end to Nails and 15 Health, and the Silver Key further up the corridor. Go through the Teleporter to return to the starting room with the Silver Door to the left.

Go through the Silver Door. Kill the Fiend that jumps when you open the Door. Collect the two 25 Health, and the Rockets and Nails by the corner. Turn left onto a curved staircase that twists to the right. Kill the Scrag that floats above the Lava in the middle of the staircase. At the first turn collect the Shells by the locked Door. At the bottom of the stairs kill the Ogre. At the end of the still twisting passageway collect the 2 Nails and press the Button. The Walls on the left side from the stairs open up to reveal railings, and a Wall opens at the far right corner to a doorway inside with a Death Knight. Collect the Shells, Nails, and 25 Health on the corridor leading to the intersection. In the dark corner straight ahead collect a 25 Health and kill the Ogre. Turn left, collect the Shells and Nails, kill the Ogre, and press the Button to unlock the Door at the first turn of the staircase. A Death Knight runs down the staircase and a Scrag spawns in the Lava center. Go through the Door and collect the Green Armor and 25 Health to the right of the Rune Gate.

Differences from Easy to Normal

 * No Nails to the left of the start
 * Death Knight at the top of the stairs raised over the first area with Lava
 * 2nd Death Knight in Water room
 * Ogre in room before round Lava room
 * 25 Health to the right of the start platform in the round Lava room
 * Death Knight spawns instead of 2 Zombies when middle Floorplate is pressed in round Lava room
 * 2nd Scrag spawns when one of the Floorplates under the Large Wall Spike in the round Lava room is pushed
 * Ogre on second floor of starting room
 * Death Knight by Silver Key
 * No Nails past Silver Door
 * Death Knight in alcove above start of the curved staircase
 * No Nails in corridor leading to Button to open Doors to Rune Gate
 * 2nd Ogre by button to open Doors to Rune Gate
 * No Death Knight runs down stairs after Button is pushed to open Doors to Rune Gate
 * Ogre to left of Rune Gate

Differences from Normal to Hard/Nightmare

 * Ogre replaces Death Knight at the top of the stairs raised over the first area with Lava
 * Ogre in corridor before Water room
 * 3rd and 4th Death Knight in Water room
 * Death Knight spawns after Nail Traps in corridor before round Lava room
 * 2nd Scrag in round Lava room
 * Return of 2 Zombies when middle Floorplate is pressed in round Lava room
 * 3rd Scrag spawns when one of the Floorplates under the Spiked Wall's Large Wall Spike in the round Lava room is pushed
 * Only a 25 Health to the right of the starting platform, and only a 25 Health on the final platform, of the round Lava room
 * Fiend spawns when heading to final platform of round Lava room
 * 2nd Ogre on second floor of starting room
 * Death Knight at top of curved staircase
 * Death Knight by locked Door on curved staircase
 * Ogre in corridor leading to Button to open Doors to Rune Gate
 * Scrag on stairs after Button is pushed to open Doors to Rune Gate
 * Scrag across from Doors on stairs after Button is pushed to open Doors to Rune Gate

Glitches

 * A Grenade Jump allows the player to jump from the lower floor to the upper floor of the starting room.

Differences

 * Rocket Launcher at  (#1) 
 * Double-Barrelled Shotgun between Nail Traps before round Lava room
 * 25 Health moved to left side of starting platform of round Lava room
 * Grenade Launcher on exit platform of round Lava room
 * Nailgun in corridor just after upper floor of start area
 * Silver Key replaced with Ring of Shadows
 * Double-Barrelled Shotgun by locked Door of curved staircase
 * Rocket Launcher by Button to open Doors to Rune Gate
 * Yellow Armor to left of Rune Gate

Spawn Locations

 * Corridor just after upper floor of start area
 * Start
 * Water room
 * Nail Traps before round Lava room
 * Exit platform of round Lava room
 * Top of curved staircase
 * By Button at bottom of curved staircase to open alcove leading to Button to open Doors to Rune Gate