Complete walkthrough for Doom 64's Level 20, The Breakdown. Find the Blue Key, Red Key, and Yellow Key to exit.
Walkthrough
- 1Start the level and proceed straight to the other end of the initial room, being aware of Zombiemen and Shotgun Guys to your left.
- 2At the far end of the room, ascend the staircase.
- 3At the top, move left until you hit a wall, eliminating any Imps encountered.
- 4Turn left from the wall to face a long pathway. Move to the middle of this pathway and turn left again.
- 5You will see a Blue Key on a pillar in front of a wall with a switch. Adjust your position left or right if the switch is not visible.
- 6Equip your Pistol, Shotgun, or Chaingun and shoot the switch to lower the pillar with the Blue Key.
- 7Return left and descend the stairs.
- 8Collect the Blue Key from the middle of the room, dealing with any Zombiemen or Shotgun Guys.
- 9Hit the switch on the pedestal in this room to open the Blue Door. Proceed through the Blue Door.
- 10Inside, follow the left wall to an opening and drop down to the floor below.
- 11Walk straight, and the wall ahead will lower, revealing Hell Knights.
- 12Defeat the Hell Knights. A pathway will then rise, leading to the opening in this room.
- 13Ascend either staircase in the room.
- 14At the top, go through the opening.
- 15Follow the right-hand wall to a staircase and head up it.
- 16At the top, proceed straight to the other end of the room, eliminating any Shotgun Guys.
- 17Turn left and enter the opening ahead.
- 18Follow the right-hand wall to a switch, defeating any Zombiemen or Shotgun Guys.
- 19Hit the switch, then turn around.
- 20Follow the right-hand wall to a Yellow Door. Skip this door and continue following the wall to another door.
- 21Open the next door and enter. Drop down into the pit in the middle of this room.
- 22Collect the Red Key. After a few seconds, the floor you are on will raise.
- 23Back on the upper floor, kill all the Demons. Once they are dead, you can leave the room through the door.
- 24Follow the right-hand wall to a staircase and head down it.
- 25Go all the way right until you hit a wall. Press the C-Right button to open it like a door and proceed through.
- 26Kill the Hell Knight inside and collect the Soulsphere.
- 27Return to the opening that led to this room. Facing the opening, go through and then turn right.
- 28You will reach Red Bars. Stand in front of them and press the C-Right button to remove them, then go through.
- 29Go right and hit the switch in front of you.
- 30Facing the switch, turn right and go through the new opening across from you.
- 31Head up the stairs. At the top, follow the hall to an opening, eliminating any Hell Knights.
- 32Enter the opening. Follow the right-hand wall to a pedestal with a switch and hit it.
- 33Turn around and follow the left-hand wall to a staircase. Head down it.
- 34Turn right and follow the right-hand wall to a door. Open it and go through.
- 35Hit the switch inside this room and leave.
- 36Follow the right-hand wall to another door. Open it and go through.
- 37Proceed through the opening at the other end of this room.
- 38Follow the pathway to a switch. Hit the switch, which will lower the wall revealing the Yellow Key.
- 39Grab the Yellow Key, go straight, and drop down to the floor below.
- 40Go right and leave this room. Backtrack to the Yellow Door.
- 41Open the Yellow Door and go through.
- 42Walk straight, and the floor will lower. Kill the Imps below and go through the opening in the middle of the room.
- 43Drop down to the floor below to exit the level.
Tips
- Use the Chaingun effectively against groups of enemies.
- Be prepared for Hell Knights after collecting the Blue Key.
- The Soulsphere provides a significant health boost.
- Carefully navigate the areas with Red Bars and switches.
100% Human-Written. AI Fact-Checked. Community Verified. Learn how AntMag verifies content