Marine Campaign Mission 2 - Aliens vs. Predator Guide - IGN

The level starts the marine off in the colony's mines. After you regain control of your marine, you should check around for secrets. You will be using

Marine Campaign Mission 4 - Aliens vs. Predator Guide - IGN

Marine Campaign Mission 1 - Aliens vs. Predator Guide - IGN

Marine Campaign Mission 2 - Aliens vs. Predator Guide - IGN

Marine Campaign Mission 2 - Aliens vs. Predator Guide - IGN

Marine Campaign Mission 5 - Aliens vs. Predator Guide - IGN

Aliens vs Predator Extinction - Walkthrough - Marine Campaign - Mission 7 - Hard - PC Emulator

Marine Campaign Mission 1 - Aliens vs. Predator Guide - IGN

Marine Campaign Mission 5 - Aliens vs. Predator Guide - IGN

Marines - Aliens vs. Predator: Extinction Guide - IGN

Marine Campaign Mission 1 - Aliens vs. Predator Guide - IGN

Aliens: Colonial Marines, Weyland-Yutani corporation Wiki

space marines – Stories by Williams

Marine Campaign Mission 2 - Aliens vs. Predator Guide - IGN

Marines: Mission Seven - Aliens vs. Predator: Extinction Guide - IGN