I'll explain how to find the legendary weapons and legendary mementos, also known as companions. Thanks for tuning in! Now on XBOX and Playstation

0:00 Introduction
0:56 Spear Legendary
3:15 Arthur
3:46 Shield Legendary
3:55 Bow Legendary
4:04 Faust Legendary
5:24 Rail Legendary
5:37 Meg's Companion
6:16 Than's Companion//
6:54 Skelly's companion
7:30 Sisyphus' Companion
8:51 Dusa's companion
8:30 Achilles' Companion
10:49 Outro

Guang Yu
The aspect of Guan Yu is revealed after:
Buy the Fate List of Minor Prophecies from the Home Builder
Reach the final boss (defeating the boss is not required)
To meet the unlock requirements while spending as little Titan Blood as possible, invest 5 in 5 different weapons, 1 of each in non-Zagreus aspects.
Wait for Achilles to tell you how to proceed.

Arthur
The aspect of Arthur is revealed after:
Reveal the Aspect of Guan Yu (does not need to be unlocked with Titan Blood)
Invest 5 or more in Blade Aspects
Wait until Nyx tells you how to proceed

Beowulf
The aspect of Beowulf is revealed after:
Unlock the aspect of Guan Yu
Invest 5 or more in shield aspects
Wait until the chaos tells you how to proceed

Rama
The aspect of Rama is revealed:
Unlock the aspect of Guan Yu
Invest at least 5 in bow aspects
Wait until Artemis tells you how to proceed

Gilgamesh
The aspect of Gilgamesh is revealed after:
Unlock the aspect of Guan Yu
Invest 5 or more in Faust aspects
Wait for Asterius to tell you what to do after his victory (in his chamber).
You will probably have to bring the fists into his fight at least once for him to acknowledge them. He may give you the command to awaken the aspect in a subsequent playthrough without using the fists.

Lucifer
The aspect of Lucifer is revealed as follows:
Unlock the aspect of Guan Yu
Invest 5 or more in rail transport aspects
Wait until Zeus tells you how to proceed

Companion Batty
5 Nectar
If you do her a favor and give her Ambrosia, you will receive the Companion Battie.

Favor
Eventually, Megaera will speak to Zagreus in his room. After this interaction, Megaera can obtain Ambrosia the next time she is encountered in the House of Hades.
It is NOT necessary to activate the "Extreme Measures" condition of the Punishment Pact.

Companion Mort
6 Nectar
After doing him the favor, you can give Thanatos Ambrosia and receive Companion Mort in return.

Favor
The favor of Thanatos is not mentioned and functions more as a narrative event between Zagreus and Thanatos.
Defeat Thanatos after giving him 6 Nectar
Once Zagreus has proven his strength to Thanatos, Ambrosia can be given to Thanatos the next time he encounters him in the House of Hades.

Companion Skelly
5 Nectar
Once you have done him his favor, you can give him Ambrosia and receive the Companion Rib.

Favor
Unlock 3 non-Zagreus aspects of weapons. After that, he should offer you the new quest on your next run
He will ask Zagreus to kill him with the Stygian Blade, but using the level 5 Zagreus aspect (which costs 5 Titan Blood in total).
Once this is done, Zagreus can give him Ambrosia the next time he meets Skelly in the courtyard.
If Skelly's favor is gained, the prophecy of Eternal Rest is also fulfilled.

Companion Shady
5 Nectar
After doing him the favor, you will receive the companion Shady in exchange for giving Ambrosia to Sisyphus.

Favor
Sisyphus' favor consists in a mitigation of his punishment.
Speak to Sisyphus, Megaera and Hades about shortening Sisyphus' sentence. After that, you can buy the Rogue King's Judgment from the House Builder (for 4 ). (You will also need to visit Nyx for 2 talks about Sisyphus, who will tell you the location of the scroll in the Archives.)
Once this is done, Sisyphus can obtain Ambrosia the next time he is encountered in Tartarus.
If Sisyphus shows his favor, the prophecy of the end of torment in the fate list of minor prophecies will also be fulfilled.

Fidi (Dusa)
6 Nectar
If you do her a favor and give her a bottle of ambrosia, she will give you the companion Fidi in return.
Favor
Dusa's favor involves the living room renovation that she has fallen behind on completing. Hire the home builder to complete at least 12 renovations in the living room, including at least one rug for the area, as well as removing Cerberus' fur and the scratches he left on the floor. This will fulfill the prophecy and allow you to give Dusa Ambrosia.

António
6 Nectar
give him Ambrosia and he will give you the companion Antos in return
Favor
Achilles' favor is to find a way to reunite him with his lifelong companion Patroclus. He will ask Zagreus to change his pact with Hades so he can enter Elysium and see Patroclus. After Zagreus finds the pact with the help of Nyx, it costs 5 to grant Achilles' wish to the House Builder. He will then depart for Elysium and Zagreus can find him at Patroclus' side in his living quarters.
After returning to the House of Hades, his affinity meter is unlocked.

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