According to Hades

TO HELL, WE GO

Summoners, you know it by a few different names: Hades, Underworld, Netherworld… Hell. And that, our dearest Summoners, is where we must ask you to go.

Mephisto commands that you ride with Cosmic Ghost Rider and restore Hell to the state of familiar chaos it once was. Enter special Limbo Quests throughout the week to recover Lost Souls and Skeleton Keys, which you can use to unlock Mephisto’s Hades Invasions. Clean up the map defeating Champions and gathering up rewards scattered throughout Hades. Complete 7 Deadly Sins Solo Objectives and partake in the Punishing Arena to earn Special Monsters & Hunters crystal shards and more!

Starts: 10/07/2020 @ 17:00 UTC (10AM PDT)
Ends: 11/04/2020 @ 18:00 UTC (10AM PST)

LIMBO QUESTS

Each quest will consist of a single (1) path with three (3) fights + Boss fight. These quests will award you Skeleton Keys, which can then be used in Mephisto’s Hades Invasions, according to its assigned Difficulties, e.g. Legendary Invasion will require a Legendary Key. You will also accumulate the Lost Souls of sinners condemned to wander the endless torments of limbo, whether you like it or not. Keep reading, those Lost Souls will serve you well...

No free lunch in Hell, so this is the total Energy cost per Difficulty:
Legendary: 16
Epic: 16
Master: 8
Heroic: 8

Rewards:

Note: Completion/Exploration Rewards will refresh every 24 hours.

MEPHISTO'S HADES INVASIONS

You made it. Welcome to Hell.

You will be taken through a total of five (5) quests. It’s tough enough to be in Hell, so hereon you will expend NO ENERGY. You will receive one (1) new quest on the first day; and then further new quests will reveal itself to you every five (5) days, so heed the timeline per quest. Each quest will consist of three (3) fights + Boss fight. As mentioned previously, you will need Skeleton Keys in order to unlock the gates to Hell, e.g. Legendary Key is required to unlock the Legendary gates of Hell. You will be rewarded with many a splendour along the quest paths, and also receive Gold, for those so inclined to Complete and Explore.
Important note: You MUST complete the path in order to claim all rewards on the path. If you exit the path before completing it, the rewards will be returned to the path. You can only claim the rewards on the path ONCE. The paths will be unlocked permanently once you’ve unlocked them the first time.

Lucky for us, Mephisto rules the underworld with some order to his chaos and has afforded us a schedule of his intentions:
Quest 1 - 10/07/2020 @ 17:00 UTC (10AM PDT)
Quest 2 - 10/12/2020 @ 17:00 UTC (10AM PDT)
Quest 3 - 10/17/2020 @ 17:00 UTC (10AM PDT)
Quest 4 - 10/22/2020 @ 17:00 UTC (10AM PDT)
Quest 5 - 10/27/2020 @ 17:00 UTC (10AM PDT)

Rewards:

SOUL BOOST STORE

Trade in all the Lost Souls collected for special boosts for use in the Hades Invasions.

Starts: 10/07/2020 @ 17:00 UTC (10AM PDT)
Ends: 11/04/2020 @ 18:00 UTC (10AM PST)

Mephisto acknowledges the...challenge...that will no doubt arise for mere mortals in the underworld, and so he has granted you all the benefit of Soul Boosts (exclusive to Mephisto’s Hades Invasions). You may have suspected, but any benefit from the underworld comes at a cost. Remember those Lost Souls you accumulated? This is where you can trade them in for your Soul Boosts. Each Soul Boost will cost you 100 Lost Souls.

And, here is all we know about the various types of Soul Boosts:

Soul of Wrath - The Attacker is Immune to Incinerate. Whenever an Incinerate fails to apply to the Attacker due to an Immunity, the Defender gains a Fury Passive, increasing Attack Rating by 40% for 8 second(s). This Boost can only be used in the "Hades Invasions" Quest.

Soul of Sloth - The Attacker is Immune to Coldsnap. Whenever a Coldsnap fails to apply to the Attacker due to an Immunity and the Defender isn't Stunned, the Defender gains an Evade charge, granting 100% chance to Evade the next attack for 6 second(s). 1 Evade charge(s) are removed when the Defender Evades. This Boost can only be used in the "Hades Invasions" Quest.

Soul of Envy - The Attacker is Immune to Poison. Whenever a Poison fails to apply to the Attacker due to an Immunity, the Defender gains an Unstoppable Buff for 7 second(s). This Boost can only be used in the "Hades Invasions" Quest.

Soul of Pride - The Attacker is Immune to Bleed. Whenever a Bleed fails to apply to the Attacker due to an Immunity, the Defender gains 20% of a Bar of Power. This Boost can only be used in the "Hades Invasions" Quest.

Soul of Greed - The Attacker is Immune to Shock. Whenever a Shock fails to apply to the Attacker due to an Immunity, the Defender Regenerates 10% of their maximum health over 2 second(s). The Regeneration has an 8 second cooldown. This Boost can only be used in the "Hades Invasions" Quest.

More on Lost Souls…
The thirst for souls in Hades has put you in yet another advantageous position with your accumulated Lost Souls. Rumour has it, Mephisto will also take Lost Souls in exchange for Skeleton Keys, should you wish to go the extra mile in Hades.

Here is the deal:
300 Lost Souls for a Legendary OR Epic Key
150 Lost Souls for a Master OR Heroic Key

Hell hath no better offer!

7 DEADLY SINS SOLO OBJECTIVES (PLUS 8TH CAVALIER ONLY DEADLY SINS SOLO OBJECTIVE)

Starts: 10/07/2020 @ 1700 UTC (10AM PDT)
Ends: 11/04/2020 @ 1800 UTC (10AM PST)

In between Mephisto’s bidding, you may also want to indulge in one, two or... seven... positively sinful side gigs for even more rewards, the likes of Gold, Attack Boosts, Arena Boost Crystals, Energy Refills, Champion Boosts, Health Boosts and sinfully special Profile Badges.

One:
Give in to GREED; open Golden, Greater Golden or Uncollected Golden Crystals.

Two:
Unleash your WRATH; win fights by dealing the finishing blow with a Special Attack 2.

Three:
Take PRIDE in your work; win all your fights in an Arena Series.

Four:
Make a SLOTH of your opponent; perform Dextrous dodges by dodging an opponent's attack at the moment of impact.

Five:
Give in to LUST; defeat Champions involved in Romance Synergy.

Six:
See a Champion you like on the arm of another Summoner? Open Monsters & Hunters Crystals and satisfy your ENVY.

Seven:
Feed your GLUTTONY; consume any level single Health Potion or Revive.

And… for our very enthusiastic Cavaliers (ONLY)...

Bonus:
Don't DESPAIR; beat Legendary Limbo Quest with a Team Rating of 10,000 or lower for a 10% T5CC Fragment Crystal.

PUNISHING ARENA

Starts: 10/07/2020 @ 1700 UTC (10AM PDT)
Ends: 11/04/2020 @ 1800 UTC (10AM PST)

Bring your 1, 2, 3, 4 and 5 star Champions into the Arena for a chance at Monsters & Hunters Crystal Shards! The meek shall rise, the mighty will fall! Earn more points with lower rarity Champions! But be forewarned, this Arena is named the Punishing Arena for a reason! There are only Milestone rewards in this Arena and there are no Rank rewards. HOT TIP: 1-Stars should give out the most points and 5-Stars the least amount of points.

Rewards:

Comments

Deacon

So for us that grinded everyday and we got our keys the "normal" way, all the lost souls will do nothing for us, like we can't turn them in for something else?

there will be a store for you to use any souls that were left over. what you'll be able to use them on .. who knows but you WILL be able to turn in your unused souls for items.

SummonerNR

Event ended, Keys still in Inventory, but NOT the Lost Souls.

(Edit, re-quoting in-game Mail)
Wonder if any leftover Lost Souls were AUTOMATICALLY converted into KEYS for us (and added into the count of keys we had left in Inventory) ?

I didn’t keep track of how many Keys I had left before event ended, to know whether I now have more than that in Inventory.

SummonerNR

...
“*BOTH* will lose their enchantment and BECOME useless Keys that can be exchanged for....”

That's why I think the Souls were maybe gonna automatically convert to more Keys.

unknown

This content has been removed.

SummonerNR

Go to Inventory.
Sell each of the Hades Keys (to get new Skeleton Keys instead).
Then go to Crystals pages and buy Souled Out Crystals w/ the Skeleton Keys (max 15 crystals, which equals max 30 old Hades Keys)

(Kabam may have to comment about the Lost Souls aspect of this).

Morpheus_123

Go to Inventory.
Sell each of the Hades Keys (to get new Skeleton Keys instead).
Then go to Crystals pages and buy Souled Out Crystals w/ the Skeleton Keys (max 15 crystals, which equals max 30 old Hades Keys)

(Kabam may have to comment about the Lost Souls aspect of this).

Thanks for this! I would have had no idea if it wasn't for you being helpful. Much appreciated.