DOOM 3: BFG Edition
59 Achievements
50-60h
GOG
Evil Marine
Complete the RoE campaign on Marine
2.6%
How to unlock the Evil Marine achievement in DOOM 3: BFG Edition - Definitive Guide
Simply beat Doom 3 RoE on Marine difficulty. This should be easy enough.
Here's a level list.
Erebus - Level 1: Main Excavation
Erebus - Level 2: Erebus Dig Site
Erebus - Level 3: Erebus Labs
Erebus - Level 4: Erebus Control
Erebus - Level 5: Erebus Research
Erebus - Level 6: Erebus Station
Phobos Labs - Sector 1: Teleportation
Phobos Labs - Sector 2: Molecular Research
Phobos Labs - Sector 3: Main Reactor
Phobos Labs - Revisited: Teleportation
Delta Labs - Unknown: Union Aerospace Research Division
Hell
Here's a level list.
Erebus - Level 1: Main Excavation
Erebus - Level 2: Erebus Dig Site
Erebus - Level 3: Erebus Labs
Erebus - Level 4: Erebus Control
Erebus - Level 5: Erebus Research
Erebus - Level 6: Erebus Station
Phobos Labs - Sector 1: Teleportation
Phobos Labs - Sector 2: Molecular Research
Phobos Labs - Sector 3: Main Reactor
Phobos Labs - Revisited: Teleportation
Delta Labs - Unknown: Union Aerospace Research Division
Hell
Note: The difficulty trophies stack.
You simply have to complete the RoE campaign on at least Marine difficulty. Marine difficultly can be chosen from the start.