*Minor Spoilers Ahead*
Make Sure You Are At Least At The Jungle, After The "3 Months Later' Time Skip
- Go To A Motor Forge And Equip This Primary Weapon. (Eye Of Sorrow)
Ophelias Normal Units Are Zombies, These Travel Around In Packs Of 5-8 On The World Map, Around The Jungle And Further South.
Kill 20 With The Eye And The Achievement Will Pop.
Great Primary Weapon.
Makes Death Rack Secondary Missions Way Easier, As It Has AOE Damage. (Area Of Effect)
Good Luck!