Horizon Zero Dawn

Story related, cannot be missed.

THE MOUNTAIN THAT FELL

Aloy journeys to the ruins of GAIA Prime in search of the Master Override - her only hope to defeat HADES.

Rewards:

• +14000 XP
• +1 Skill Point

Objective Log:

1. Go to the Bitter Club: Travel to the Bitter Club mountain and climb up it.
2. Go to the Ruins of GAIA Prime: Climb up the mountain to reach the top until you trigger a cutscene. You don't have to fight the Machines in this area. Keep going again until you trigger another cutscene and get a new objective.
3. Climb up the Outcrop: Climb up the mountains until you found Sylens.
4. Talk to Sylens: Simply talk to Sylens.
5. Go to the Door: Activate the Scan on the locked bunker door.
6. Search the Ruins for the Master Override: Find a safe way down and search the ruins for - GAIA's Journals, Dr. Elisabet Sobeck, then proceed to the next floor.
7. Examine the Shrine: Interact with the Shrine terminal.
8. View the Hologram: Watch and listen to the Hologram that comes out of the Shrine.
9. Talk to Sylens: Talk to Sylens to discuss what Elisabet.
10. Search the Ruins for the Master Override: Keep climb up the Ruins until you trigger a cutscene.
11. Examine the Control Room: Interact with the terminal.
12. View the Hologram: Watch and listen to the Hologram that comes out of the terminal.
13. Talk to Sylens: Talk to Sylens about the Old Ones.
14. Claim the Master Override: The Override, originally designed to purge GAIA and her subordinate functions, has the power to purge HADES. You will need to find a way to use it. Pick it up before leaving.
15. Return to Sylens' Workshop: Leave the ruins to meet the real Sylens and have a conversation.
16. Attach the Master Override to the Lance: Forge a weapon capable of destroying HADES by attaching the Master Override to the Lance. This gives you the "Sylens' Lance", the strongest Lance in the game. The trophy will unlock once you have it.