I wanted to give a very rough breakdown of the cost for the new Atlas branches.
We have three categories: Offensive Gear, Defensive Gear and Primarch Buffs.
The first two offer five different branches for every element, the last one offers four branches for every Bronze Primarch type.
One Offensive Gear branch costs 150,000 Atlas Badges to complete.
The Elite Gaunlets are achieved after 75,750 Badges, the Elite Cuirass requires completion of the whole branch.
Atlas Badges come from Badge Chests, 10 Badge Chests can be purchased for 4k rubies.
You can also earn 33 Badge Chests for every 7500 glory earned.
The approximate drop of Badges from Badge Chests is roughly 954 1013 Badges per 10 chests.
(This is from a small sample of 4x 10 chest pulls from today).
EDIT: Updated droprates with more precise data from here.
So for 150,000 Badges you need around 1573 1485 Chests.
This costs around 357,000 338,000 glory or 629,000 594,000 rubies.
At a max glory ratio of 1.5 without any penalty from hitting players of a lower level or team rank and without wasting troops on poor or failed attacks and without factoring in primarch stats, you’re looking at around 238,000 225,000 troops lost to obtain the 357,000 338,000 glory.
Let’s say you can revive 100% of your troops when defending, and 66% of your troops when attacking.
You can also revive revived troops so this goes on and on.
For attacking, you will need to lose 100k 95k troops revived 3x or 85k 81k troops revived 6x.
For defending, you will need to lose 60k 57k troops revived 3x or 34k 33k troops revived 6x.
Caution: In practice it’s very much possible that you need to lose over 1 Million troops if your kill ratio is not perfect.
I would almost claim that it’s nearly impossible to complete a branch with the required troop losses I presented in theory!
Reminder: This only lets you complete one single branch and rewards you with two elite gear pieces along with tons of other rewards that can also be obtained outside of branches.
Disclaimer: I can’t guarantee that there haven’t been any math errors from my side, this is only a very rough overview of the costs you could be looking at to complete one Atlas season branch.