SOMA is a gripping sci-fi horror experience set in the depths of the ocean. With its emotional story, eerie atmosphere, and well-designed puzzles, it offers a memorable journey—and ten Steam achievements to unlock. This guide will walk you through how to earn all of them efficiently, whether you’re playing on Normal or Story Mode (both are valid for 100% completion).

Estimated time to 100%: ~14 hours

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Achievement Overview

• Total Achievements: 10
• AStats Points: 5
• Steam Hunters Points: 1297
• Metagamer Score: 2155

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Step-by-Step Achievement Guide

🏆 1. Answering the Call

• Unlock: Speak to Catherine for the first time.
• Where: Shortly after arriving at the underwater facility.

Tip:
Progress through Simon’s apartment, Munchy’s lab, and the opening sections. Use the keycard code 0722 to access Flow Control and continue to the terminal where you meet Catherine.

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🏆 2. Chasing Catherine

• Unlock: Discover Lambda Station.
• Where: After using the shuttle.

Tip:
Power the shuttle, then ride it to Lambda. After the crash, walk the rest of the way, drain the water, and enter the station.

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🏆 3. The Dunbat

• Unlock: Discover Theta.
• Where: Mid-game, after using the antenna and Zeppelin.

Tip:
Use the comm antenna to align signal 5 and get the code 049. Summon a Zeppelin, acquire parts from a robot, and enter Theta.

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🏆 4. Plan B

• Unlock: Fail to obtain the Dunbat.
• Where: During the simulation puzzle in Theta.

Tip:
Load the correct modules in Brandon Wan’s simulation using clues from his room. Proceed after completing the simulation sequence.

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🏆 5. Killed the Dream I Dreamed

• Unlock: Escape Theta.
• Where: After surviving the maintenance tunnels.

Tip:
Follow story prompts, avoid enemies, and complete environmental puzzles to escape safely.

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🏆 6. A New You

• Unlock: Change bodies at Omicron.
• Where: During the body transfer sequence.

Tip:
Solve the laser mirror puzzle to get the cortex chip. Adjust suit parameters to 1, 5, 7 and complete the transfer.

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🏆 7. Endangered Species (Missable)

• Unlock: Meet the last living human.
• Where: At Tau.

Tip:
Speak with the survivor at Tau and exhaust all dialogue options. Wait for the achievement to pop before choosing whether to euthanize her.

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🏆 8. Expressway to the Stars

• Unlock: Reach the Omega Space Gun.
• Where: Endgame section.

Tip:
Move the Ark battery to the loading dock. Retrieve and load the Ark into the shuttle to reach the final area.

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🏆 9. The End

• Unlock: Complete the game.
• Where: Post-credits scene.

Tip:
After launching the Ark and watching the cutscenes, the final achievement unlocks during the after-credits sequence.

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Puzzle & Gameplay Tips

🔐 Keycard Puzzle

• Use code 0722 (default, may vary) to activate Flow Control early in the game.

🧠 Theta Simulation

• Choose the lowest memory-consuming modules to stay under the 3% limit.

⚙️ Omicron Suit Transfer

• Set frequencies to 1, 5, and 7 in the configuration menu.

🔋 Battery Puzzle

• Align the battery circuit from the top-left to bottom-right to power the Ark shuttle.

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Known Bugs & Fixes

• Omni-tool Bug:
  At the deep ocean facility, swiping the Omni-tool twice can cause it to freeze. To fix this:
  • Pause and reload your last save, or
  • Exit to the main menu and restart the checkpoint.

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Final Notes

Congratulations on completing SOMA! With this guide, you should now have all 10 achievements and a deeper appreciation for one of the most atmospheric narrative games in modern horror.

For more completion guides, puzzle solutions, and story breakdowns, check out our full playlist or subscribe to stay updated.

Happy hunting beneath the waves. 🌊👁‍🗨

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