MAP06: Alpha Quadrant (Doom 64)

MAP06: Alpha Quadrant is the sixth map of Doom 64, designed by Danny Lewis. The level introduces barons of Hell and pain elementals. The level is of medium size but contains multiple platforming puzzles. It also contains one of the most deadly traps in Doom 64: in a large, football-shaped room, the player must run across three platforms to reach a switch at the end of the room. However, if the player falls off one of the platforms, they will fall into a dark pit filled with many spectres. The level uses the music track "Bleep Spawn".

Walkthrough
Doomguy starts in a small room with a door that leads to the first open part of the map with a large square portion of the ceiling hanging down toward the floor. In the middle of the floor sits a shotgun. Picking it up triggers nightmare imps on the platforms above. Shooting them will alert nearby cacodemons, Hell knights, and a baron. Dispatch them all and then head into the elevator corridor to the right of the start point.

As Doomguy approaches the elevator, he will trigger the door of a "service access channel" which serves as an alternate route to take the monsters lying in wait for you at the top of the elevator by surprise. There is also some health and ammo in the channel as well. Alternatively, Doomguy can skip the channel and continue on.

After the elevator, there will be a long, curving corridor surrounding a large room with sergeants lining it. Mow them down using the chaingun until you reach the end where there is a switch. Activate the switch and the door to the large room will open up. Inside the large room you will see two raised platforms and a switch on the far wall. Activating the switch will trigger the appearance of a pair of Hell knights on the platforms. Kill them and bridges will raise to gain access to the platforms. One will have the yellow key card. Collect it and move back out into the curved corridor.

A complex of corridors branch off from the curved corridor which is infested with imps, Hell knights, sergents, and barons, and at the end of that is a square cage with an opening that houses a megasphere (see secrets to find out how to get it). Traversing this portion of the map is not crucial to its completion, but it is necessary to obtain 100% kills, items, and secrets.

After collecting the yellow key card, Doomguy makes his way back toward the map start and this time heads into the other elevator corridor, killing the lost souls. There is a switch at the top that could not previously be activated without the yellow key card. Activating the switch will raise a bridge that would allow you to cross, but the aforementioned square portion of the ceiling blocks your path. After the bridge lowers, a small niche opens up in the elevator corridor for the bridge that gives you access to a switch that causes the square portion to recess into the ceiling, thereby allowing you to cross. Crossing the bridge takes you to a platform with another switch, which changes the bridge configuration that takes you to another platform with another switch, which raises a bridge that takes you to the second main portion of the map.

The second main portion of the map consists of a large yellow room with a recessed step-down floor, and is infested with imps, nightmare imps, spectres, and a baron. When you step on the middle of the floor, it raises up allowing you to jump to various portions of the room. Use it to jump to the platform where the baron was and activate the switch. This will open the door to the large and dangerous football-shaped pit room.

In the football-shaped room, Doomguy will need to bust out his rocket launcher and dispatch the two initial barons within, while being careful of the pain elementals spawning lost souls, for which Doomguy will need to switch weapons. All the while, the constant sound of roaring can be heard from spectres in a sealed off corridor off to the side of the pit. After dispatching the barons and pain elementals, you will need to make leaps of faith across the three pillars that will slightly raise up as you jump on them toward the switch at the far end of the pit. This will open a door in the yellow room from before that houses the blue key card. There is also another switch off to the right by the teleporters in the pit room that can be accessed by jumping for it from the center pillar. This switch opens the aforementioned corridor where the spectres lurk, and Doomguy must be careful not to fall off the ledge leading to the door to the corridor, while still making haste to it before it closes. Dispatch the spectres inside and activate the switch. This opens another storage door housing a mega armor power-up next to the blue key card door. If Doomguy falls into the pit, a horde of spectres will swarm him and being very dark, they will be impossible to see. The only way to escape is to climb a narrow set of stairs leading back to the portals.

After collecting the blue key card, Doomguy returns to the first main part of the map and opens the blue door. Three barons will emerge and attack. Dispatch them and enter the blue door, taking the elevator to the exit switch.

Secrets
To obtain the megasphere in the cage room in the complex corridor, in the room where you get the yellow keycard, start by heading out of the doorway you came in. You will hear a portion of the wall open up to your right. Head inside and kill the lost souls, then the other side will open up revealing access to the megasphere. Jump across to collect it.