Achievement unlocked: "It's too late, oh god!" - Watched the intro.
Achievement unlocked: "Destroying the Destroyers' Destroyer" - Destroyed the Eva.
Achievement unlocked: "My god! It's full of star!'" - Finished the first nebula mission.
Achievement unlocked: "Subspace blues" - Defeated the Lucifer in subspace.
Achievement unlocked: "Walk in the corridor" - Defeated the Lucifer using ONLY squadron members.
Achievement unlocked: "Sa-Vasuda" - Complete the evacuation of the Vasuda system.
Achievement unlocked: "Killing and diving are what I do best" - Survived the trip through the second Knossos portal.
Achievement unlocked: "Capellan BBQ" - Stayed behind during the supernova event.
Achievement unlocked: "It's been fun, but I have to go" - Survived the supernova event.
Achievement unlocked: "Shivan Slayer" - Kill 1'000 Shivans.
Achievement unlocked: "The Great Destroyer" - Kill 1'000'000 Shivans.
Achievement unlocked: "A piece of junk" - Hijacked Bosch's project.
The list can be really loooong.... these are some i can think of...
-The Waiting game - Keep the Trinity alive for 15 minutes (and nothing will happen)
-Jump Dammit! - Save the Nebtuu
-The hard way - Destroy the Tiamat
-Scraching the paint - Get the Belisarius kill
-Scraching the paint 2 - Get the 1st Sathanas kill
-Natural Leader - Dont loose a single squad mate in the whole campaing (Crash of Titans 2 has to be excluded)
There could be easily 1 or 2 per mission plus some global ones.