Steam Community :: Guide :: DOOM Written Guide/Walkthrough for all secrets on each mission including Doomguy locations.

Secret 1 – Missable

WARNING: This secret can be missed if you activate the door to Samuel’s office immediately after the first hive encounter.

Start the mission on the train and step off on the left side, face the UAC sign and head up the left stairway until you come to a few demons.

On the left side are two entrances to the bathrooms, take the right side entrance and inside climb the sink and climb up to the hatch in the ceiling.

Continue through the hatch into a room which contains an

Elite Guard

,

Automap

and of course secret number 1.

Continue the mission. 

Secret 2 – Missable

WARNING: This secret can be missed after secret 6.

After speaking to Samuel in his office make your way towards the airlock that takes you outside, but before reaching the airlock take a left after exiting the elevator to grab an

Elite Guard

.

Once outside clear the area and activate the terminal on the far side, this will open the second airlock and the blue barrier.

Enter the second airlock to find a

Rune

, secret number 2 and a funny turkey game hidden behind the crates.

From here go to secret 3. 

Secret 3 – Missable

WARNING: This secret can be missed after secret 6.

This is where things can be a little complicated so i will explain as best i can.

Exit the airlock from secret 2 and from where the blue barrier was located we need to reach the top of the rock in front, to do that jump across onto the lower left platform and from that point jump up onto the rock and climb your way up to the very top.

From the very top face the mission objective and jump across onto the next rock platform and then over to the platform with the three large pipes, behind them is a health/armor pickup that will gain you secret number 3.

From here immediately go to secret 4.

Secret 4 – Missable

WARNING: This secret can be missed after secret 6.

Starting from the location of secret 3 look down from the right side edge and drop to the platform below, from there jump across to the platform opposite, inside will be an

Argent Cell

and secret number 4.

Once again from here immediately go to secret 5.

Secret 5 – Doomguy – Missable

WARNING: This secret can be missed after secret 6.

Starting from the location of secret 4 make your way along the pipeline against the wall to the platform ahead and then proceed to jump across and climb up to the central platform.

From there once again make your way up to the top of the rock like we did in secret 3 and then again jump over to the next rock platform.

This time ignore the platform with the three pipes from secret 3 and instead jump over to the small platform next to the two pipes on the right side, this will require a big double jump.

Once on the small platform you will find a lever, activate the lever to unlock the secret room for secret number 6 later on.

Immediately after that climb onto the pipes and make your way into the gap, inside will be secret number 5 which is a

Doomguy

.

Now go to secret 6.

Secret 6 – Missable – Secret room

WARNING: This secret can be missed once you jump across and enter the pipeline.

From secret 5 we need to head back to the beginning where we first exited the airlock and activated the terminal, so to do that drop down on the right side to the platform below and make your way across the platforms as highlighted in the left screenshot below, this will bring you back to the airlock location.

At the back of that area you will notice the door is open for the secret room, head inside for secret number 6.

 WARNING: Once you proceed with the mission and enter the pipeline you will not be able to come back and collect any missing secrets, so make sure you get them all first.  

Secret 7

I originally marked this secret as missable if both fans were activated but there is a shaft between the two fan rooms that allows you to drop back down if needed; you will also find an armor pickup on the way down.

Continue the mission and after entering the pipeline climb up through the fans and exit out.

Continue to follow the path around until you reach a small room with another fan that is activated, turn off the fan using the switch and enter the room, drop down through the gap on the floor that opens up and then drop further down to the lowest point and enter the tunnel to grab a

Field Drone

and secret number 7.

Secret 8 – Missable

WARNING: This secret can be missed if you enter the area where the BFG labs are situated, there is no way back.

After secret 7 turn the fan back on and enter the room again to be lifted to the top, when you’re at to the top enter the tunnel and follow the path around to the right, you will exit out in front of the BFG Labs.

Do not enter the labs, instead take the door on the left and inside will be an

Elite Guard

and secret number 8.

Secret 9 – Doomguy – Missable

WARNING: This secret can be missed if you enter the room which contains the BFG.

Enter the BFG labs and look around for a door with Prototype Lab 1 above, enter the room and when inside you will see an open shaft in the upper right corner, climb onto the central machine and into the shaft then follow it around, at the end will be a

Doomguy

for secret number 9.

Continue the mission. 

Secret 10 – Missable

WARNING: This secret can be missed if you continue into the next room first.

After picking up the BFG proceed with the mission and activate the terminal after testing out the gun, once the terminal is activated enter the door to Testing Chamber 1 nearby.

As you enter Testing Chamber 1 you will see on the left hand side a small passage, enter and follow it around to gain a

Rune

and the final secret number 10 for this mission.