LEVEL

Hello is a Single Player level.

At the time of release, this level was one of the largest available. At 1564 KB, it was one of the first to be larger than E4M7: Azure Agony, being 103 KB larger than the aforementioned level.

Unlike what the documentation says, it is possible to get all of the Secrets.

Quick Level Completion

 * Turn around and go through the Teleporter.
 * Turn right, then follow the thin beam to the end.
 * Turn left, then follow the thin beam to the end.
 * Turn right, then follow the thin beam to the end.
 * Turn right, then follow the thin beam to the end.
 * Turn left, then follow the thin beam to the end.
 * Turn right, then follow the thin beam to the end.
 * Turn left, then follow the thin beam to the end.
 * Turn left, then follow the thin beam to a platform.
 * Go through the Teleporter to your right to reach the next room.
 * Turn around, then drop to the floor below.
 * Head to the upper left corner of the room and go through the Teleporter.
 * Turn left, then head about halfway down the corridor.
 * Turn right, then go through the doorway.
 * Turn left, then follow the corridor to the end.
 * Turn right, then follow the corridor to the end.
 * Turn right, then cross the room and go through the Teleporter on the opposite side.
 * Turn left, then go through the Teleporter straight ahead.
 * Turn left, then go through the doorway in the upper left corner.
 * Cross the large room, then go through the doorway in the upper left corner.
 * Turn left, then proceed down the corridor to the opposite side.
 * Go through the doorway to the right, then turn right to look down the next corridor.
 * Proceed down the corridor to exit the level.

Walkthrough
As you spawn into the map you will collect the Shells and land on a platform suspended over a pool of Lava. Kill the Ogre on the platform straight ahead, then turn around. Collect the Double-Barrelled Shotgun straight ahead and the Shells to the left. Ignore the Teleporter to your right, instead passing it before heading onto the platform to your right. Kill the Ogre straight ahead and follow the platform to the intersection at the end. Return to the Teleporter and pass it once more to reach the opposite platform. Follow the platform to the end to reach an intersection, then turn left and follow the platform to the end while ignoring the platform to the right. Kill the Shambler, then turn around and return to the intersection. Proceed down the platform to kill a Shambler. Return to the previously ignored Teleporter and go through it. Turn right while ignoring the skinny platform straight ahead, then walk onto the skinny platform suspended over a pool of Lava. Turn left at the end of the platform, then follow the next section of platform. Turn right at the end, then follow the next section of platform to an intersection. Ignore the small section of platform to the left, instead following the platform to the right. Turn left at the end, then follow the platform to another intersection. Ignore the small section of platform to the left, instead following the platform to the right. Turn left at the end, then follow the next section of platform. Turn left at the end, then follow the platform to a larger platform. Collect the Nailgun and Nails. Ignore the Teleporter straight ahead, instead going towards the wall to your left with a torch above it to reach an invisible Teleporter. Turn right to look into the room. Collect the Cells straight ahead  (#1) . Turn right, then go through the Teleporter to your right to return to the room with the small sections of platform. Go through the Teleporter straight ahead to reach the next room.

Turn right, then follow the platform to the end and drop to the lower floor. Collect the 6 Nails, two 25 Health, Grenade Launcher, Shells, and Rockets straight ahead. Turn right, then kill the 4 Fiends. Ignore the Teleporter straight ahead, instead proceed towards the torch in the upper right corner to reach an invisible Teleporter (#2) . Go through the Teleporter straight ahead to enter the next section. Turn left to kill the Knight. Follow the corridor about halfway down, then turn right and go through a doorway. Turn right while ignoring the corridor to the left, then follow the passageway to the end. Turn left, then proceed slightly forward before turning left to kill a Knight in an alcove. Turn right, then follow the corridor to the end. Turn left to kill a Shambler. Follow the corridor to the end to collect a 25 Health. Return to the previously ignored corridor and head down it. Turn right to go through a doorway at the end. Collect the 25 Health near the upper right corner, then go through the doorway in the upper left corner. Follow the passageway to the end, then turn right to enter another room. Kill the 2 Shamblers straight ahead and proceed forward to the middle of the room. Turn around, then proceed forward to collect 2 Nails and a Super Nailgun in an alcove. Turn around once more and look into the room. Walk towards the wall with a fire above it to your right to reach an invisible Teleporter (#3) . Go through the Teleporter in the upper left corner of the room to reach the next section.

Turn left, then collect the 3 Nails, Rockets, and Shells by the Teleporter. Ignore the Teleporter, instead going around it towards a wall with a fire above it to reach an invisible Teleporter (#6) . Go through the Teleporter straight ahead to reach the next room. Turn around, then proceed to the opposite side of the room. Collect the 7 Nails, four 25 Health, Rockets, and Rocket Launcher. Turn right, then head through the doorway to reach the next room. Proceed straight ahead to the middle of the room. Kill the row of 30 Zombies going from the left to right wall. Proceed forward to collect the Nails in the upper right corner. Go through the doorway in the upper left corner to reach the next room. Turn left once you have entered the room to look down a long corridor. Kill the Fiend on the ground and the 5 Ogres on the bridge above, then proceed forward until you are below the next bridge. Kill the 5 Ogres on the bridge, then proceed forward until you are below the next bridge. Kill the Fiend on the ground and the 5 Ogres on the bridge above, then proceed forward until you are below the next bridge. Kill the 5 Ogres on the bridge, then proceed forward while killing 3 Fiends. Go through the doorway in the upper right corner, then turn right into the next room. Proceed down the corridor while killing the 3 Shamblers. Go through the Teleporter at the end of the corridor to exit the level.

Alternate Versions
Aftershock=