Darkness

Darkness is a Single Player level in Q2. This level has the same geometry as Showdown, though placement of Ammo and Weapons is entirely different.

Walkthrough
Ignore the door in front of you and instead go through the doorway to your left. Kill the 2 Grunts and Rottweiler while collecting the Double-Barrelled Shotgun. Turn right at the end of the corridor and kill the Rottweiler. Go through the doorway and kill the 2 Grunts to your left and the Knight in front of you. Collect the Rockets at the intersection between doorway going straight and the one going to the right. Go through the right doorway and kill the 3 Grunts while collecting the 25 Health. Turn right at the end and kill 2 Grunts, then return to the intersection as the corridor you are in leads back to the starting room. Go through the doorway to your right, turn right and move forward a foot, then turn left. Kill the 3 Grunts while collecting the two 25 Health. Ignore the door in front of you and instead go through the doorway to your left. Kill the Knight, then continue down the corridor while ignoring the side doorways to collect 3 Rockets while killing a Scrag. Kill the Ogre in the room to the left while collecting two 25 Health, then return to the corridor. Enter the doorway at the end of the corridor and kill the 2 Grunts while bewaring of the Radioactive Container. Ignore the doorway to the right and instead go through the doorway to the left. Kill the 3 Grunts and turn right at the end of the corridor. Kill the Fiend and turn left. Collect the Quad Damage and turn left again. Kill the Scrag and follow the corridor to a Green Armor, this corridor links up with the three-way intersection you were in earlier so go back to the Radioactive Container room and go through the doorway on the opposite side of the room. Kill the 2 Grunts and turn right at the end of the corridor. Kill the Grunt and turn left. Ignore the 2 Zombies and go through the doorway in the lower right corner. Kill the Grunt in front of you and the Grunt down the corridor to the left. Kill the 2 Grunts in the room to the right, then return to the corridor. Kill the 3 Rottweilers in the room across the hallway to the right, then return to the corridor. Ignore the doorway to your left and instead collect the Rocket Launcher from the upper left corner of the corridor. The room beside the Rocket Launcher leads back to the room beside the one with the Ogre, so instead go through the last doorway you ignored after going back to kill the 2 Zombies. Kill the 2 Rottweilers and go through the doorway to your left. Go through the doorway to your right and kill the Grunt. Turn right and kill the 2 Grunts, then go through the doorway at the end of the corridor. Kill the Ogre and go through the doorway on the opposite side of the room. Turn right and kill the 2 Grunts. The doorway leads to the room in front of the three-way intersection.