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One Head Down…

Defeat a full cluster of Cultists of Kosmos.

One Head Down…-0.1
1 guideOffline Game Mode - These achievements require play in game modes that do not necessitate a connection to any online services.Single Player - These achievements can be obtained by a single player.Collectable - These achievements are obtained by exploring the game environment to find a set of unique objects.
AStarfoxAStarfox533,802
05 Oct 2018 21 Oct 2018
28 1 9
As you progress through the third chapter you'll hear of a group who call themselves the Cult of Kosmos. Tracking down and killing these cult members becomes a primary objective.

In order to take on cult members, you’ll need to gather clues left by individual cultists to find their identity. Once found, you'll be able to fully reveal who they are and ultimately their location.

The Eyes of Kosmos cultists are probably the quickest members (Top left branch / 6 members)

Names and Locations (Provided by Powerpyx):

Note: Thanks to APOLLO2342 for confirming Sokrates missions don’t show up until after chapter 4.

Elpenor: Unmissable, story related.

Sotera: She’s inside the Fort of Megaris, usually walking around the docks or on the right side of the Fort. You can also use your eagle to scan for her.

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The Master: Unlocked during “A Life’s Worth” Side Quest (Attika Region, must do all Sokrates side quests in the region until it pops up). Then he’s standing around in the south of Attika Region, between the Fast Travel Point “Tower of Sounion” and the Silver Mountain. You can again use your eagle to find him more easily.

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Hermippos: Free Speech Side Quests (Attika Region, must do all side quests in the region until it pops up). You kill him during that quest.

Midas: In Argolis Region. You should have him unlocked as soon as you get the Cultist List and can track him from there.

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Nyx the Shadow: She’s standing around in the south-east of Attika city. You can again use your eagle to look for her.

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xXOdessaXxIs there a way to check progress? For instance, I already conquered Megaris.
Posted by xXOdessaXx on 15 Oct 18 at 03:55
AStarfoxProgress can be checked on the main Cultists tab. Here you can see which members you’ve found, killed and have yet to find. Main Story progression is required to unlock the cultists tab.
Posted by AStarfox on 15 Oct 18 at 09:49
AttitudeParkI'm guessing you also have the kill the "main" cultist of the tree? (I killed all in one branch then they revealed one of the members in the middle of the cultist tab, so my guess is I have to kill her for the achievement?)
Posted by AttitudePark on 15 Oct 18 at 17:10
AStarfox@AttitudePark, that is correct. For example, Nyx the shadow is the sixth and main (inner tree) member for the Eyes of Kosmos cultists.
Posted by AStarfox on 15 Oct 18 at 17:32
APOLLO2342Thanks for the guide! I’d also mention that sokrates missions don’t show up until after chapter 4
Posted by APOLLO2342 on 16 Oct 18 at 00:48
AtsumerThis seem to be buggy. I just killed Nyx the Shadow and thus completed the first branch - but the achievement didn't unlock. I did this right at the beginning of Episode 6.

EDIT: The achievement unlocked once I completed the Episode.
Posted by Atsumer on 24 Oct 18 at 18:11
HolyHalfDeadThe Master (owns a quarry and slave operation in Attika)
Must first complete Chapter: The Road to the Symposium
Check Attika for yellow exclamation mark black diamonds
Sokrates (Greater Athens) - Citizenship Test
Sokrates (Greater Athens) - Witness Him
Sokrates (Port of Piraeus) - On a High Horse
Sokrates (Silver Mountain) - A Life’s Worth
Posted by HolyHalfDead on 27 Oct 18 at 20:50
HolyHalfDeadAtsumer - all Xbox One achievements are Buggy like that.

I got the achievement early on in Episode 5.
Posted by HolyHalfDead on 27 Oct 18 at 21:33
HNDZ xCerberusJust a heads up: this achievement glitched for me but unlocked as soon as I got another achievement in the game (reaching level 50). So it would seem that if it glitches, you get it whenever you unlock another achievement in the game.
Posted by HNDZ xCerberus on 25 Jun 19 at 08:43