E1M3: Research Complex (Double Impact)

E1M3: Research Complex is the third map of Double Impact. It was designed by Matt Cibulas (RottKing) and Ralph Vickers (Ralphis), and uses the music track "". The par time defined in the DMAPINFO lump of the edition released as official add-on is 21:00.

Secrets

 * 1) Along the way to the yellow key, you will be in a dark cargo room. The walls in this room are covered with vines, but you can go through the vines at the southern end of the room, There are rockets, a green armor, and a medikit here. An imp will also be present on Hurt Me Plenty or higher. (sector 123)
 * 2) At the room east of the normal exit, there is a switch in the southwest corner that raises a bridge. At the middle of this bridge is a door. To open it, go into the nukage at the southern end of the building and find the switch on the wall. Then lower the bridge and ride it up. Inside this room is a berserk pack, armor bonuses, and ammo. Some former humans may also be inside. (sector 190)
 * 3) The room just after the dark cargo room has a section of tech wall that is different than the rest. Open this wall for clips, shells, and armor bonuses, and flip the switch for a lift to another room with rockets and a shortcut back. (sector 240)
 * 4) Once you find the blue key, backtrack all the way to the western section of the map and open the blue door. The teleporter in this room takes you outside where you can collect a soul sphere. (sector 347)
 * 5) Open the door at the start and head east and open the door here. The next door you see cannot be opened directly. Instead, climb the steps up to a hall with four doors. Open either green door, and on the wall, you can faintly spot a button, which will open up the door that you could not open before. This will lead to the southernmost section of the map, but you will need both the red and yellow keys to proceed. (sector 363)
 * 6) Enter Secret #5 after getting the red and yellow keys, then open the doors and hit the switches in both side rooms. Open the east door and walk across the bridge, then open the next wall you see to find a backpack and two stimpacks. (sector 390)
 * 7) At the southern portion of the map leading to the blue key, go to the place with the switch that raises the bridge, then open the green wall east of that switch. Get the rockets here and open the door to get health bonuses and a medikit while fending off former humans. (sector 513)
 * 8) Near the switch that opens the normal exit door, look along the hallway to spot one of the walls being in between two metal ridges. Open this wall for a secret hallway where you can get, among other things, a partial invisibility and a rocket launcher. The hallway takes you back to the normal exit room. (sector 752)

Current records
The records for the map at the Doom Speed Demo Archive are:

The data was last verified in its entirety on December 9, 2021.

Player spawns
This level contains seventeen spawn points:
 * 1) facing south. (thing 813)
 * 2) facing south. (thing 814)
 * 3) facing south. (thing 815)
 * 4) facing north-west. (thing 816)
 * 5) facing east. (thing 817)
 * 6) facing south-east. (thing 818)
 * 7) facing north. (thing 819)
 * 8) facing south. (thing 820)
 * 9) facing east. (thing 821)
 * 10) facing north. (thing 822)
 * 11) facing north. (thing 823)
 * 12) facing south. (thing 824)
 * 13) facing west. (thing 825)
 * 14) facing south-west. (thing 826)
 * 15) facing north. (thing 827)
 * 16) facing east. (thing 828)
 * 17) facing north. (thing 829)

Things
This level contains the following numbers of things per skill level: