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Optimal Upgrade Paths — The Callisto Protocol Guide
The Callisto Protocol

Optimal Upgrade Paths — The Callisto Protocol Guide

Master The Callisto Protocol's upgrade system. This guide details optimal paths for weapon and health upgrades to maximize Jacob's combat effectiveness on Maximum Security difficulty.

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Optimal Upgrade Paths — The Callisto Protocol Guide

Master The Callisto Protocol's upgrade system. This guide details optimal paths for weapon and health upgrades to maximize Jacob's combat effectiveness on Maximum Security difficulty.

This guide focuses on the optimal upgrade paths for weapons and health in The Callisto Protocol, aiming to help players maximize Jacob's combat effectiveness, especially on the challenging Maximum Security difficulty. We'll cover which upgrades to prioritize to make your journey through Black Iron Prison more manageable.

Walkthrough
  1. 1
    Chapter 1: The Outer Way
    1. Start a new game on Maximum Security.
  2. 2
    Immediately access Photo Mode and take a picture to unlock the "Mugshot" achievement.
  3. 3
    Follow the hallway, find the first Bios collectible (1/43) in a locker on the left.
  4. 4
    Proceed to the cargo bay and learn navigation mechanics: vaulting (LSu + A) and mantling.
  5. 5
    As you approach a flaming hole, you'll unlock the "The Outer Way" achievement.
  6. 6
    Learn crouching (B), shimmying (LSu), and sprinting (LB).
  7. 7
    After a cut-scene, hold forward on the left stick to return to the captain's chair to end the chapter.
  • Chapter 2: Prison Break
    1. After a brief dream sequence, explore your cell until you hear a music box.
    2. Exit your cell and turn right towards a staircase. Descend to meet Elias.
    3. Elias will give you a shiv, unlocking the "Desperate Times" achievement.
    4. Use the shiv on a control panel to open a door, then shimmy through.
    5. In the next room, learn combat basics: hold LSl or LSr to dodge before an attack. Alternate dodges for consecutive attacks.
    6. Attack with RT after dodging.
    7. Defeat the two inmates and the first Biophage, practicing dodging.
    8. During this fight, aim to dismember both arms to unlock the "Flesh Wound" achievement.
    9. Unlock Elias's cell using the computer console.
    10. Exit and chat with Elias, then take the elevator down.
    11. After leaving the lift, turn left and crouch under debris.
    12. Fight another Biophage and practice perfect dodges: flick LS left or right as an opponent winds up for an attack (much earlier than expected). A successful perfect dodge triggers slow-motion.
    13. Achieve 5 perfect dodges to unlock the "Float Like A Butterfly" achievement. Note: This achievement can be buggy; focus on consistent attempts.
    14. After the fight, find a glowing green wall storage unit to receive a health injector and trigger a tutorial.
    • Tips
    • The game is significantly easier after recent patches, making Maximum Security manageable.
    • Pay close attention to enemy animations to time dodges effectively.
    • Alternate dodges (left/right) to counter multiple attacks.
    • Practice perfect dodges early, as the achievement can be inconsistent.
    • Stomp on defeated enemies with Y to conserve ammo and potentially gain health.

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