Quantum Theory Achievements

Full list of all 50 Quantum Theory achievements worth 1,000 gamerscore. It takes around 60-80 hours to unlock all of the achievements on Xbox 360.

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  • Gladiator

    Kill the Chariot during Thorax on Hard in 1 minute 30 seconds or less.

    2 guides
  • Warrior

    Defeat Thanatos on Hard in 1 minute 30 seconds or less.

    2 guides
  • Matador

    Kill the Dreadnought on Hard in 2 minutes or less.

    2 guides
  • Nevermore

    Kill the Raven on Hard in 2 minutes or less.

    2 guides
  • Entropy

    Defeat Chaos (Thanatos II) on Hard in 1 minute 30 seconds or less.

    2 guides
  • Release

    Defeat Diablosis Soma (Thanatos III) on Hard in 3 minutes 30 seconds or less.

  • Trusty Sidearm

    Clear the entire story using only the Revenant.

  • What a Pal

    Don't let any teammates who were setting charges go down during the final battle in The Womb.

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    Quantum Theory Achievements FAQ
    • How many achievements are there in Quantum Theory?
      There are 50 achievements in Quantum Theory, worth a total of 1,000 Gamerscore.
      You can view the full list of Quantum Theory achievements here.
    • Is Quantum Theory on Game Pass?
      No, Quantum Theory is not currently available on either Xbox Game Pass or PC Game Pass.
    • When did Quantum Theory release on Xbox?
      Quantum Theory was released on September 28th, 2010.
    • How long does it take to complete all the achievements in Quantum Theory?
      It takes between 60 and 80 hours to complete the achievements in Quantum Theory.