Assassin's Creed Odyssey
93 Achievements
1,850
129-157h
Surgical Sniper
Heal by getting 10 headshot kills while you have the Golden Harbinger equipped.
20
0.82%
How to unlock the Surgical Sniper achievement in Assassin's Creed Odyssey - Definitive Guide
You will get the Golden Harbinger after killing Gergis the Herald during the Smoke and Fury storyline quest. Equip it as one of your melee weapons. You can then use a bow to get the headshots -- you don't need to attempt to get headshot kills with the Golden Harbinger and you don't even need to have low health when you go for this trophy.
The easiest way to do this is to either headshot kill animals or civilians, although you can, of course, headshot enemies as well.
To unlock this achievement you will need to kill 10 enemies with a headshot kill while having the 'Golden Harbinger' equipped. You will find this weapon after killing the cultist 'Gergis the Herald'. See the description for "For Love of Persia" for his location.
Once you have it, equip it and then go around shooting and killing the weaker enemies with your bow via headshots. You may need to weaken them first with melee kills. You will need to do this in open combat and let yourself be hit to lower your health if you need to, then when you get a headshot kill, you will be given 1% of your health back. Do this 10 times for the achievement.
https://www.youtube.com/watch?v=ETNFoaGBVOI