To unlock all the Infernal Arms in Hades, you must carefully gather resources and fulfill certain game progression criteria. Here’s a comprehensive step-by-step guide to effectively unlock each weapon along with their hidden aspects:

Unlocking Infernal Arms

1. Collect Chthonic Keys: You need a total of 24 Chthonic Keys to unlock all Infernal Arms. These keys can be earned through various gameplay activities, including completing runs and progressing through the storyline.

2. Story Progression: As you advance through the game’s narrative, you will automatically unlock the Heart-Seeking Bow, Coronacht. This is a key requirement to begin your journey with the Infernal Arms.

3. Unlock Remaining Arms: Utilize the Chthonic Keys you’ve collected to unlock the remaining Infernal Arms:
– Stygius (the Stygian Blade)
– Varatha (the Eternal Spear)
– Aegis (the Shield of Chaos)
– Gungnir (the Lance of Ouroboros)
– Adamant Rail (the railgun)

Upgrading and Aspects

– Upgrades: During your runs, you can find Daedalus Hammers, which you can use to upgrade each weapon. These upgrades provide significant improvements in stats and abilities.

– Aspects: Each Infernal Arm contains multiple Aspects, which can be unlocked using Titan Blood collected from bosses or bounties throughout your quests. These additional Aspects enhance your weapons even further.

Unlocking Hidden Aspects

To gain access to the hidden aspects of each Infernal Arm, follow these detailed steps:

1. Fight the Final Boss: You must reach the final boss at least once; it isn’t necessary to defeat them, but you must journey to the surface.

2. Unlock Five Aspects: Unlock at least five Aspects across any of the Infernal Arms. You will need to collect five Titan Bloods to accomplish this, which are obtained from defeating bosses or completing bounties.

3. Get the Fated List of Minor Prophecies: Purchase the Fated List from the House Contractor using 20 gemstones. This list is essential for unlocking the hidden aspects of the weapons.

4. Talk to Achilles: Once you have completed the above conditions, engage in conversation with Achilles in the House of Hades. Keep talking to him until he shares a vision regarding the Varatha, which will provide you with a significant phrase required for unlocking hidden aspects.

5. Unlock Specific Hidden Aspects:
– Primary among these is the Aspect of Guan Yu for the Varatha spear, which is the first of the hidden aspects accessible to you.
– Each weapon has a total of four Aspects, with the fourth being a hidden Aspect that you can unlock once you’ve met the prerequisites outlined previously.

By following this guide systematically, you can unlock all the Infernal Arms, upgrade them, and unlock their hidden aspects, significantly enhancing your gameplay experience in Hades. Enjoy your journey through the Underworld!