- Main Objective: Complete the Indiana Jones and the Great Circle order of giants walkthrough to uncover the secrets of the Nephilim Order and the Cult of Mithras.
- Starting Point: Locate Father Ricci near the Fountain of Confession in the Vatican after reaching the "Stolen Cat Mummy" chapter.
- 100% Completion: Track all 118 Journal Notes and 7 Mithraic Artifacts across Rome and hidden underground ruins.
- Best Upgrade: Prioritize Rome Adventure Books to unlock unique traversal and combat skills specific to the DLC areas.
- Platform Availability: Playable on Xbox Series X|S, PS5, PC, and Nintendo Switch 2 (as of May 2026).
The legend returns in a massive expansion that takes Indy deeper into the mysteries of the Vatican and the ancient streets of Rome. This Indiana Jones and the Great Circle order of giants walkthrough provides a comprehensive roadmap for players looking to conquer the "Order of Giants" story DLC. Whether you are navigating the treacherous ruins beneath the city or solving the complex riddles of the Cult of Mithras, this guide ensures you won't miss a single detail. The DLC is seamlessly integrated into the main campaign, offering a rich narrative that bridges the gap between Indy's global adventures. In this guide, we will break down the essential steps to trigger the expansion, solve the most difficult environmental puzzles, and locate every elusive collectible required for the "Roman Scholar" achievement. Prepare your whip and fedora; the Indiana Jones and the Great Circle order of giants walkthrough begins now.
Accessing the Order of Giants DLC
Before diving into the ancient ruins, you must ensure you have the correct version of the game and have progressed sufficiently in the main story. The Order of Giants is not a standalone experience but a chapter that expands upon the existing Vatican hub.
| Edition | DLC Access | Extra Content |
|---|---|---|
| Standard Edition | Separate Purchase Required | Base Game Only |
| Premium Edition | Included | DLC, Digital Artbook, Temple of Doom Outfit |
| Collector's Edition | Included | All Premium Content + Physical Items |
| Premium Upgrade | Included | Requires Standard Edition base game |
You cannot start the DLC immediately upon launching a new game. You must progress the main story until you reach the objective "Bring the Parchment to Antonio" during the "The Stolen Cat Mummy" adventure. If you have already finished the game, simply use the Travels tab in your Journal to return to the Vatican.
To begin the questline, head to the Vatican Gardens and look for a new NPC, Father Ricci, who is accompanied by his parrot, Pio. He is located near the Fountain of Confession. Speaking with him triggers the "A Mystery Begins" Fieldwork, officially launching the DLC narrative.
Indiana Jones and the Great Circle Order of Giants Walkthrough
The core of the DLC involves a linear yet exploration-heavy route through Rome's hidden history. Follow these steps to progress through the main story mission.
The Vatican Investigation
After speaking with Father Ricci, follow his parrot, Pio, through the Vatican traversal points. You will need to climb toward the higher balconies to reach Father Ricci's Office. Inside, search for the Villa Pia Key and read the correspondence regarding the Nephilim Order. This office contains the first 5 of the 118 Journal Notes.
Entering Villa Pia
Use the key to enter the Casina / Villa Pia grounds. This area acts as a mini-hub. You must avoid the guards (or take them out silently) and locate the entrance to the underground crypts. Look for a loose floorboard in the tool shed behind the main villa to find a secret passage.
The Roman Streets
The path leads out of the Vatican and into the streets of Rome. This section is more open, allowing you to explore local shops and alleyways. Your goal is to find the House of the Gilded Cupid, which serves as a front for the Cult of Mithras. Use your camera to identify cult symbols on the walls to track their movements.
The Cult of Mithras Base
Once inside the cult base, you will encounter more heavy-weight enemies. Use the Jumbo Lasso ability if you have it unlocked. Solve the Seven Grades of Initiation puzzle (detailed in the next section) to open the massive stone door leading to the final confrontation.
The Depths of the City
The final act takes place in the Nephilim Ruins deep beneath Rome. This is a gauntlet of traps and environmental puzzles. Use Indy's whip to swing across crumbling pillars and reach the Heart of the Mountain, where the final cinematic and boss encounter occur.
Rome is crawling with both Fascist soldiers and Cultist guards. While Indy can hold his own in a fistfight, the DLC rewards stealthy play. Use the Throttle ability to take out guards quietly, as reinforcements in the narrow Roman alleys can quickly overwhelm you.
Key Puzzle Solutions
The Indiana Jones and the Great Circle order of giants walkthrough wouldn't be complete without solutions to the DLC's unique "Giant-sized" puzzles. These are often more complex than the base game's riddles.
Father Ricci's Desk Cipher
- Location: Father Ricci's Office (Vatican).
- Clue: The Bible verses marked on the wall.
- Solution: Align the desk drawers to match the numbers 3-1-6-2.
- Reward: Opens a hidden compartment containing the Villa Pia Key.
The Seven Grades of Initiation
- Location: Cult of Mithras Base.
- Clue: The seven statues lining the ritual hall.
- Solution: Place the ritual items (Raven, Bride, Soldier, Lion, Persian, Sun-Runner, Father) in their respective niches based on the height of the pedestals.
- Reward: Unlocks the path to the Nephilim Ruins.
If you find yourself stuck, remember to use Indy's Camera. Taking a photo of a puzzle element often triggers a hint in the Journal, or Indy will provide a verbal clue about what he is missing.
| Puzzle Name | Location | Quick Solution | Reward |
|---|---|---|---|
| Villa Pia Dial | Villa Pia Courtyard | Rotate the sun dial to 4 PM | Secret Staircase |
| Sewer Valve | Rome Underground | Align the three gears by size | Drains the flooded path |
| Mithras Crucifix | House of Gilded Cupid | Pull the levers in order of the "Sacred Wounds" | Hidden Lore Note |
| Giant's Gateway | Nephilim Ruins | Use the whip on the two counterweights | Final Door Opens |
Collectibles and 100% Completion
For the completionists, the Order of Giants adds a significant amount of content to the Journal. You will need to find all Mithraic Artifacts to earn the "The Seven Grades" achievement.
DLC 100% Checklist:
- Collect all 118 Journal Notes in Rome/Vatican
- Find all 7 Mithraic Artifacts
- Solve all 3 DLC Mysteries (A Mystery Begins, Roman Scholar, The Seven Grades)
- Unlock all 5 new Adventure Book abilities
- Pet the Cat at Via Giulia (Secret Achievement)
Mithraic Artifacts are often hidden behind breakable walls or in dark corners. Always keep your Lighter equipped when exploring the underground sections of Rome.
| Artifact Name | General Location | Cleanup Tip |
|---|---|---|
| Raven Plaque | Father Ricci's Office | Behind the bookshelf |
| Persian Dagger | Villa Pia Crypts | Inside the stone sarcophagus |
| Lion Mask | Rome Alleys | Buy from the "Shady Vendor" for 500 Lira |
| Sun-Runner Medallion | Cult Base | On the altar in the side chapel |
| Mithras Statuette | Nephilim Ruins | After the first swinging section |
| Nephilim Seal | Heart of Mountain | Right before the final boss room |
| Ricci's Rosary | Vatican | Talk to Ricci after finishing the DLC |
Technical Requirements and Performance
The Order of Giants introduces high-density Roman environments that can be more demanding on your hardware than the base game.
| PC Tier | Resolution/Target | Recommended GPU | Storage |
|---|---|---|---|
| Minimum | 1080p / 60 FPS (Low) | RTX 2060 Super / RX 6600 | 126GB + 9GB DLC |
| Recommended | 1440p / 60 FPS (High) | RTX 3080 Ti / RX 7700 XT | SSD Required |
| Ultra | 4K / 60 FPS (Ultra) | RTX 4080 / RX 7900 XT | SSD Required |
On Xbox Series X and PS5, the DLC maintains a steady 60 FPS in Performance Mode. However, the dense crowds in the Roman streets may cause slight dips in Resolution Mode. The Nintendo Switch 2 version (released May 12, 2026) includes all DLC on-cartridge and is optimized for portable play.
Frequently Asked Questions
Q: Do I need to finish the main game to play the Order of Giants DLC?
No, you only need to reach the 'Stolen Cat Mummy' chapter in the Vatican. However, we recommend finishing the main story first to better understand the overarching 'Great Circle' narrative.
Q: How long does the Indiana Jones and the Great Circle order of giants walkthrough take to complete?
A standard story run takes about 4-6 hours. If you are going for 100% completion, including all 118 Journal Notes and artifacts, expect to spend 8-10 hours.
Q: Can I go back to Rome after finishing the DLC?
Yes, once the DLC story is complete, Rome and the new Vatican areas remain accessible via the Travels tab in your Journal for any remaining cleanup.
Q: Where is the cat I need to pet for the achievement?
The cat is located in an alleyway near Via Giulia in the Rome street section. It usually sits on a wooden crate near a green door.