Fourth-Degree Burns is a support quest in Assassin’s Creed Odyssey relating to Lagos the Archon.
Your task is to burn grain silos to reduce the army power of Lagos.
Here’s a brief walkthrough of Fourth-Degree Burns in AC Odyssey.
This quest is recommended for level 35, but it may differ according to your character’s level. These support quests may or may not be mandatory.
You can probably kill Lagos without doing them (I think) but his fort’s defenses would be pretty strong if you don’t complete the quests.
Find Lagos’ compound
Your first objective is to look for Lagos’ compound to burn the grain silos.
The exact location of the compound is shown in the map below. It’s at the words “Arkadia” on the map.
Burn three silos
As you reach the area, you will find three silos to burn. The exact locations are as depicted below.
There are also location objectives for the compound. You can choose to engage all of the enemies, or just burn the silos and escape.
You won’t miss the silos as they are huge. Use your torch and swing it to burn them.
Remember to loot the Ainigmata Ostraka here as well.
And that’s it for this quest Fourth-Degree Burns. Hopefully this walkthrough is simple enough.