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This guide will show you how to complete the Forbidden Legacy, a Side Quest in Horizon Forbidden West (HFW). Read on to learn the quest objectives, strategies, location, and rewards for completing the Forbidden Legacy Side Quest.
List of Contents
| Forbidden Legacy | |
|---|---|
| Quest Giver | Alva |
| Description | Alva believes data in San Francisco may help the Quen fix a defunct flood control system back home. She is determined to find it - no matter what obstacles stand in her way. |
| Rewards |
・9750 XP ・3 Skill Points ・Utaru Protector |
| Recommended Level | 30 |
The quest wil become available after completing Faro's Tomb.
You can begin this quest by talking to Alva at The Base.
 Location |
World Location |
| Objectives | |
|---|---|
| 1 |  Call Alva in the CampfireGo to Legacy's Landfall campfire and call Alva. |
| 2 |  Follow Alva to the Research FacilityFollow Alva until you reach the entrance of the Research Facility |
| 3 |  Search the Ruins for DataUse your Focus to find data about the facility. However, you will be interrupted by a Slitherfang |
| 4 |  Kill the SlitherfangKill the Slitherfang to progress to the next objective. |
| 5 |  Search the RuinsUse your Focus to find important data. You will be able to find a vent that leads further inside. |
| 6 |  Explore FurtherContinue moving inside the facility until you reach a Data Console. Activate it to trigger a cutscene. |
| 7 |  Follow Alva to the Atbay HeadquartersFollow Alva to reach the entrance of the Atbay Headquarters. You will reach a path that can be opened using a Pullcaster. |
| 8 |  Climb up the TowerFollow the climbing path inside the tower. After that, lower the ladder and climb until you reach two Sunwings that you can take down using Silent Strike. |
| 9 |  Jump to the TowerAfter reaching the top, us your Pullcaster to remove another set of debris and jump to the tower. |
| 10 |  Open the Door Using a CodeAfter jumping to the next tower, you will find a door that can be unlocked with a security code. The code is 102023. |
| 11 |  Climb up to the OfficeProceed to the next room, where you will use your Pullcaster to open up a climbing spot.Follow the climbing spot to the right until you reach a section with grapple points. Follow those points until you reach the top. |
| 12 |  Reach Eileen's OfficeContinue going up until you reach a shaft that is blocked by Firegleam. Ignite it using your spear and go up inside. |
| 13 |  Open the Office DoorInvestigate the artifacts to find the code. The code is 402625. |
| 14 |  Activate the Holo in Eileen's OfficeActivate the Holo Projector to watch the recording. This will complete the side quest. |
This side quest has some tricky climbing sections. Make sure you use your Focus to find spots to grab and go higher. Use your Pullcaster to reach grapple points and pull obstacles as well.
You can get the Utaru Protector after the quest by talking to Alva in The Base (before Singularity), or at Legacy's Landfall (after Singularity)
| Side Quest | Level |
|---|---|
| Deep Trouble | Lv. 5 |
| The Bristlebacks | Lv. 7 |
| The Twilight Path | Lv. 7 |
| Shadow of the Past | Lv. 7 |
| Shadow in the West | Lv. 10 |
| Drowned Hopes | Lv. 22 |
| The Burning Blooms | Lv. 15 |
| Need to Know | Lv. 25 |
| The Roots that Bind | Lv. 15 |
| A Tribe Apart | Lv. 15 |
| The Promontory | Lv. 17 |
| Thirst for the Hunt | Lv. 17 |
| The Wound in the Sand | Lv. 19 |
| The Gate of the Vanquished | Lv. 15 |
| The Deluge | Lv. 15 |
| Signal Spike | Lv. 16 |
| Breaking Even | Lv. 18 |
| A Soldier's March | Lv. 18 |
| Blood for Blood | Lv. 19 |
| The Second Verse | Lv. 25 |
| The Valley of the Fallen | Lv. 28 |
| The Way Home | Lv. 32 |
| The Blood Choke | Lv. 27 |
| Forbidden Legacy | Lv. 30 |
| What Was Lost | Lv. 30 |
| In the Fog | Lv. 20 |
| Lofty Ambitions | Lv. 24 |
| Boom or Bust | Lv. 24 |
Forbidden Legacy Side Quest Walkthrough
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