The Indiana Jones and the Great Circle: The Order of Giants DLC introduces thrilling new adventures, including intricate side puzzles like A Collegial Mystery. This early challenge tasks players with cracking a safe code using biblical artwork clues, rewarding them with valuable items.
Introduction to The Order of Giants DLC
Released as an expansion to the acclaimed Indiana Jones and the Great Circle, The Order of Giants transports players to ancient mysteries in Rome and beyond. Set in the iconic universe of the fedora-wearing archaeologist, the DLC blends puzzle-solving, combat, and exploration. A Collegial Mystery stands out as one of the first optional challenges, hidden in the opening area, encouraging thorough investigation.
These mysteries enhance replayability, tying into achievements and providing unique perks. Solving them reveals lore-rich documents and adventure books that boost Indy’s abilities, such as increased damage output in specific scenarios.
Navigating to Casina Pio IV: The Puzzle’s Starting Point
Your journey begins upon entering the DLC. Indiana Jones arrives at Casina Pio IV, a historic villa brimming with secrets. Ignore the prominent wall map leading to Rome’s underground tunnels for now—turn right instead and ascend the staircase.
Upstairs, pass through a smaller connecting room into a larger chamber adorned with religious artwork. To the left, on a desk, lies Federico’s Letter. Interact with it to activate A Collegial Mystery. This note hints at deeper enigmas, directing attention to a nearby safe tucked in the corner.
- Enter Casina Pio IV from the DLC start.
- Spot the large wall map but head right to stairs.
- Upstairs: small room to large room.
- Grab Federico’s Letter on desk to begin mystery.
Deciphering Alessandro’s Letter: The Core Clues
With the mystery triggered, shift focus to the row of chairs in the large room. Under the first chair, retrieve Alessandro’s Letter—the key to the safe. This document poses three riddles rooted in Christian iconography:
Consider the number of Apostles when our Lord washed their feet.
Reflect upon the multitude of Cherubim bearing witness to the Nativity of our Savior.
Finally, carefully count the number of beasts present in celebration as the prodigal son returns to his father’s embrace.
These point to specific paintings in the rooms. Each artwork depicts biblical scenes, and counting elements yields numerical clues forming the four-digit code.
Analyzing the Biblical Paintings Step by Step
The paintings are strategically placed for immersion. Examine them closely to count accurately—no guesswork required, though some details demand scrutiny.
| Clue | Artwork Description | Location | Count |
|---|---|---|---|
| Apostles’ Feet Washing | Jesus washing disciples’ feet | Above row of chairs, big room | 12 |
| Cherubim at Nativity | Angels witnessing Christ’s birth | Left wall, smaller room | 2 |
| Beasts in Prodigal Son | Animals celebrating return | Right wall, near Nativity painting | 2 |
Combining these: first digit from Apostles (1 from 12, but full 12 as first two), then 2 Cherubim, 2 beasts—yielding 1222.
The Apostles Painting Breakdown
Hung prominently above chairs, this illustrates the Last Supper’s foot-washing. Precisely 12 apostles surround Jesus, matching the scriptural account. Focus on visible figures for the count.
Cherubim in the Nativity Scene
In the smaller room’s left wall, the Nativity shows baby Jesus with exactly two cherubim observing. Their angelic forms are distinct from other elements.
Beasts of the Prodigal Son
Adjacent on the right, the Prodigal Son’s joyful return features two beasts in celebration. Look for non-humanoid figures in subdued colors to confirm.
Opening the Safe and Claiming Rewards
Approach the safe in the large room’s corner. Input 1222 to unlock it. Inside awaits:
- Hard Crust adventure book: Grants charged bread melee damage boost.
- Two documents: Alessandro’s additional note and a discretionary assessment for lore.
These items advance mystery completion and DLC progress. The book equips a fun combat perk, ideal for upcoming brawls.
Why A Collegial Mystery Matters in the DLC
Beyond loot, this puzzle exemplifies the DLC’s design—rewarding observation in historical settings. It’s missable if players rush the main path, yet essential for 100% completion and trophies.
Completing all mysteries unlocks achievements, enriching the narrative around the Order of Giants’ ancient secrets.
Tips for Solving Similar Puzzles Efficiently
- Always scan rooms thoroughly before advancing.
- Interact with desks, chairs, and walls for hidden notes.
- Count precisely; paintings reward attention to detail.
- Collect all adventure books for gameplay edges.
Common Player Pitfalls and Fixes
Many overlook the upstairs area, mistaking the wall map for the priority. Others miscount beasts due to lighting—use flashlight if needed. Double-check letters for full clues.
| Pitfall | Solution |
|---|---|
| Missing Federico’s Letter | Check left desk immediately upon entering large room. |
| Wrong Cherubim Count | Only winged figures count; ignore halos. |
| Forgetting Safe Location | Corner opposite paintings. |
Integration with Main Story and Other Mysteries
A Collegial Mystery occurs pre-Rome trek, setting a detective tone. It pairs with later puzzles like gladiator mazes, building puzzle-solving skills. Collect all for full DLC mastery.
Technical Notes for Smooth Gameplay
Ensure latest patches for DLC stability. On PC/console, adjust graphics for clear painting details. No glitches reported for this mystery.
FAQs
What is the safe code for A Collegial Mystery?
The code is 1222, derived from 12 Apostles, 2 Cherubim, 2 Beasts.
Where do I find Alessandro’s Letter?
Under the first chair in the row, large room.
What rewards does the safe give?
Hard Crust book, two documents.
Is this puzzle required for the main story?
No, it’s optional but key for achievements.
Can I miss this mystery?
Yes, if you skip upstairs—backtrack possible early.
Player Reactions and Community Insights
Guides praise its thematic fit, with YouTube walkthroughs garnering views for visual aids. Forums note the subtle beast count as tricky but satisfying.
This puzzle captures Indiana Jones’ essence: intellect over brawn in sacred spaces.
References
- A Collegial Mystery Safe Code – Indiana Jones The Order of Giants — GameRant. 2025-09-06. https://gamerant.com/collegial-mystery-solution-safe-code-indiana-jones-the-order-of-giants/
- A Collegial Mystery Safe Combination (Order of Giants Guide) — YouTube (Video). 2025.
- Indiana Jones Order of Giants: A Collegial Mystery Walkthrough — Gamer Social Club. 2025-09-06. https://gamersocialclub.ca/2025/09/06/indiana-jones-and-the-great-circle-the-order-of-giants-a-collegial-mystery-walkthrough/
- How to solve the Collegial Mystery in Indiana Jones — YouTube (Video). 2025.
- Indiana Jones and the Great Circle A Collegial Mystery Walkthrough — PowerPyx. 2025. https://www.powerpyx.com/indiana-jones-and-the-great-circle-a-collegial-mystery-walkthrough/

