Army of Ruin
221 Achievements
GOG
Heavy Greaves
Forest III - Upgrade Ranger Bow to Level 5
19.7%
How to unlock the Heavy Greaves achievement in Army of Ruin - Definitive Guide
Necrophage33
You'll first need to unlock Ker (see Ker (10G)), because she starts with the Ranger Bow. Then, simply play as Ker in this stage and max out her bow to unlock this achievement.