Z1M4: Command Control (Knee-Deep in ZDoom)

Z1M4: Command Control is the fourth level of Knee-Deep in ZDoom, revisiting the original level with some new twists.

Secrets

 * 1) Sector 73: Find your way to the start room of the original level. The secret room, which is opened by pressing on the wall to the south (in the automap), is still there, containing two stimpacks and one bullet box.
 * 2) Sector 1375: Near the northern green door, go down the corridor with the rotating fans. One of the walls on the right can be opened by pressing it. A berserk pack, four rockets and two stimpacks are found inside.
 * 3) Sector 2583: In the room with the giant UAC logo on the floor, jump on the box next to the barrel. Then jump onto the large crate structure, and drop down onto the backpack.
 * 4) Sector 4577: After entering the underground remotely opened door, you will eventually arrive at a slime room with bridges. A curved wall with misaligned texture to the west of the bridges can be opened there. A medkit and a radiation suit are inside.
 * 5) Sector 4911: In the same area, head to the east while submerged. There is an alcove containing a super shotgun and a box of shells. Notice that once the level of the slime has been lowered at a later phase of the map (by pressing the switch that makes the blue key available), you can only return up from the secret area with a rocket jump.
 * 6) Sector 5643: Near the beginning, there is the yellow door that actually does not have a fitting key anywhere in the level. To open the door, you will need to press the switch that raises the bridge to the exit. In the room beyond the yellow door, the wall by the two dead marines can be opened, leading to a "DOPEFISH LIVES!" Easter egg and a megasphere.
 * 7) Sector 5822: A staircase connects the round room with the green doors and the area that has a megaarmor in an elevated position. At the fifth step of the stairs (counting from the east), the northern wall has a slightly different texture. Press it to reveal a room. Some health and ammo can be found inside as well as the letters "NMN" referring to Pawel Zarczynski, a member of the KDiZD team and primary mapper of this level.

Speedrunning
The records for this map at the Doomed Speed Demos Archive are: Last updated on March 17, 2013.

Things
Initially, this level contains the following number of things on each skill level:

Primary mapping

 * Pawel Zarczynski (NMN)

Secondary mapping

 * Nick Baker (NiGHTMARE)
 * Michael Niggel (Risen)

Tertiary mapping

 * Björn Ostmann (Vader)
 * Ryan Turner (BioHazard)
 * Kirby
 * Vile1011