Crimson Void Crusade Guide

Use the table of contents to navigate to whichever mission you're currently doing. The numbering order was roughly determined by the order in which I ran the missions when I made the screenshot of the crusade map.

Yellow box -> chest or loot
-This icon covers all types of static loot like chests and unidentified items. The icon's size is not indicative of what type of loot is there.

Blue 'Diamond' -> info-fragment
-For revealing the contents of end-crusade loot chests. Omicron Arkh has a voice line that lets you know when one is nearby.

Red Box -> cogitator for unlocking secret and covert missions

Red Diamond -> covert mission (this is a crusade map icon)

Red Triangle -> enemy that drops an encrypted dataslate
-The dataslate is used to access a cogitator that unlocks a covert mission. Only one dataslate is required.

Purple Oval -> teleporter
-Only teleporters that go to rooms with other map-key objects are marked.

Green Star -> relevant secondary objective
-Only secondary objectives that unlock something upon successful completion are marked.

Note about the crusade map:
The small yellow number in each mission icon is the corresponding difficulty increase.

Note about the mission maps:
I've rotated them to at least approximately match how the map is oriented at the start of the mission.

https://steamcommunity.com/sharedfiles/filedetails/?id=2315277386
The numbers below have been converted to my numbering.

"Mastery Path"
1 - 2 - 3 - 4 - 5 -
6 - 7 - 8 - 19 - 9 -
13 - 17 - 16 - 18 - B -
21 - 15 - 12 - 11 - 20 -
A - 10 - 14 - X

Cogitator unlocks Covert Mission A.

Dataslate allows you to access the cogitator in Secret Mission 18.

Must successfully aid the Stormwatcher to access the cogitator which unlocks Secret Mission 11.

Unlocked via the cogitator in Mission 9.

Must successfully aid the Stormwatcher to access the cogitator which unlocks Secret Mission 18.

Dataslate allows you to access the cogitator in Secret Mission 18.

Must have an encrypted dataslate to access the cogitator here which unlocks Covert Mission B.

Unlocked via the cogitator in Mission 1.

Unlocked via the cogitator in Secret Mission 18.

Nothing here.

Let me know if I missed anything or if there are any typos/formatting issues.

Credits:
https://steamcommunity.com/profiles/76561198092241169 for the 6/7/23 update
https://steamcommunity.com/profiles/76561198027073109 for the heads up regarding changes to the 'defend the psyker' event

Patch Notes:
6/7/23 ->
-added a section for Grimstalker's recommended path
-changed the link to Grimstalker's stuff from the general link to the link for the specific crusade and moved it to the dedicated section from the basic guide info section
1/14/24 ->
-updated map 13