Valor Of The Soldier Helm is an Immortals Fenyx Rising Soldier Armor Set gear piece (helmet) you can unlock while exploring the Clashing Rocks area of the video game developed by Ubisoft. The Soldier Armor Set Helm is in a side room Epic Chest in The Observatory, as you can see on my map below.
How To Unlock the Clashing Rocks Observatory Side Room Epic Chest
The Epic Chest containing this piece of gear is found in the upper section of The Observatory in a hidden room (pictured).
To get it, first, you’ll need to break the wall using your axe. Once inside, you’ll see a forcefield that must be removed and a small round plaque at the end of some stairs (left side as you enter). While standing on the said plaque (also pictured), use your Apollo’s Arrow to shoot an arrow through the grate above the forcefield.
Make sure you aim for the fire on the brazier, then control your arrow and keep moving forward. The idea here is to hit the brazier on top of the roof on the other side (also pictured).
It is the round roof where you have found the Valor Of The Soldier Breastplate. After you light the brazier, the forcefield is removed, and you can claim the chest.