Level 21: Pitfalls

Start the level, turn right, open the door, and proceed through.

Kill the Shotgun Guy in the next room and exit.

Return to the previous room and kill all Zombiemen and Shotgun Guys. The Yellow Key will appear in the center; grab it.

Open the Yellow Door in this room and go through.

Kill the Hell Knight in front of you and proceed to the other end of the room. The floor will lower.

Kill the Cacodemon below and run straight to the platform on the other end.

Hit the switch on this platform, then drop into the lava.

Go left and take the teleporter.

Upon teleporting, turn left, go straight, and step onto the green floor.

Turn right and use the large steps to reach an opening.

Position yourself in front of the opening, turn right, and run to the platform across the gap.

Follow the right-hand wall on this platform to a teleporter, killing the Hell Knight nearby. Step on the teleporter.

After teleporting, follow the right-hand wall to an opening.

Go through the opening and proceed straight until you see an opening to your left.

Enter the opening to your left and continue straight until you see a door to your right.

Open the door to your right and go through.

Follow the right-hand wall to a switch, eliminating any Shotgun Guys. Grab the Computer Area Map in front of the switch before hitting it.

Leave this room and return to the wall across from you.

Open the door to the left and go through.

Cross the pathway to the opening at the other end, defeating any Cacodemons.

Hit the switch to your right and leave the room.

Follow the left-hand wall to an opening, defeating any Hell Knights or Barons of Hell.

Go through the opening and proceed straight to the other end of the room.

Barons of Hell will appear; turn around and follow the right-hand wall to an opening.

Go through this opening and then through the opening to your right.

Follow the hall to an opening and go through it.

Reach the middle of the pathway, turn right, and run to the pedestal with the Blue Key. Grab the Blue Key.

Drop to the floor below and leave the room.

Follow the right-hand wall to the Blue Door, open it, and go through.

Kill the Baron of Hell in front of you and hit the switch on the pedestal to the right.

Leave this room and return to the wall.

Turn right and follow the left-hand wall to a teleporter, defeating any Barons of Hell. Take the teleporter.

Upon teleporting, step onto the large step to your left.

Drop to the floor below and proceed straight to the other end of the room.

Turn right and go through the opening.

Continue straight to the other end of the room, defeating any Imps or Shotgun Guys.

Grab the Soulsphere and turn right to get onto the pathway.

Follow the pathway to a pedestal with a switch and hit it.

Head right and descend the stairs. A platform with the Red Key will be to your left.

Turn left, align yourself with the platform, and run onto it to get the Red Key.

Drop into the lava below and find a teleporter. Step on it.

Upon teleporting, turn around and go up the stairs.

At the top, proceed to the other end of the room.

Position yourself in front of the Red Bars and press the C-Right button to remove them.

Hit the switch in front of you.

Turn around and leave the room.

Return to the teleporter you were told to remember and take it.

Follow the hall until you reach an opening to your left (skip the first one).

Go through the opening to your left and then through the opening in front of you.

Proceed to the wall in front of you and follow it to an opening (either side works).

Go through the opening to exit the level.