With Doom’s campaign nearing its end, Mission 12 and Mission 13 hold some of the last secrets to uncover. This guide details all secret locations in these missions to ensure you don’t miss any collectibles.

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Mission 12 Secrets

Secret 1 – Cuddly Toy

• After reaching the outdoor area early in the mission, proceed through a few locked areas.
• Locate an Elite Soldier and cross the bridge.
• Instead of going left, drop down to the right.
• Head towards the green door, enter, and follow the path to a platform where the secret toy awaits.

Secret 2 – Elite Guard

• Progress through the mission, clearing enemies along the way.
• Enter a room with levers, defeat any mobs, and proceed forward.
• Find a hidden chute behind some blocks.
• Drop down and locate the Blue Keycard.
• In the next room, interact with the Elite Guard’s body to claim this secret.

Secret 3 – Classic Doom Room

• Near the Blue Keycard location, locate a lever hidden behind some blocks.
• Pull the lever and backtrack.
• The secret Classic Doom area is now open.

Secret 4 – Hidden Cuddly Toy

• Continue progressing through the mission objective.
• When reaching a drop-down section, stick to the left side.
• Carefully descend to a lower platform where another cuddly toy secret is found.

Secret 5 – Elite Guard

• Near the end of the mission, before entering the final arena.
• Find a platform near an elevator.
• Instead of riding the elevator, drop down carefully.
• The Elite Guard’s body is there, marking your final secret.

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Mission 13 Secrets

Secret 1 – BFG Ammo Pad

• After clearing the starting area, the door opens for progression.
• Instead of advancing, turn right and drop down.
• Locate a Skull Key switch, then use the opposite side to climb up.
• The secret area holds extra ammo, including BFG rounds.

Secret 2 – Hidden Area with Powerups

• Continue through the main mission path.
• Once reaching another arena battle, look for a Skull Switch.
• This unlocks a hidden room containing power-ups.

Secret 3 – Classic Doom Room

• Progress further into the mission until you see a lever along the left tunnel.
• Pulling this will unlock a classic Doom room nearby.
• Turn right after the lever pull to access the hidden area.

Secret 4 – Cuddly Toy in Staircase

• After another large-scale fight, ascend a set of stairs.
• Before reaching the top, turn 180 degrees.
• A hidden gap in the steps houses another cuddly toy collectible.

Secret 5 – Final Classic Doom Room

• Upon crossing a long bridge, a final Skull Key switch is visible.
• Activate it and backtrack slightly.
• The final secret room opens, marking the last hidden area in Doom’s campaign.

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Final Thoughts

That wraps up all hidden secrets in Doom’s Mission 12 and Mission 13. This guide focused only on secrets (question mark collectibles) rather than data logs or challenges.

If you found this helpful, check out our other mission guides covering all secrets from Mission 1 through Mission 13. Don’t forget to like, subscribe, and leave a comment if you have any questions or additional Doom content requests.

Thanks for reading—now go rip and tear some demons!