There are multiple people, lifepod 4 was probably breached by an reaper, but lifepod 2 was really deep down, so they died of oxygen, mix of All probably

Couldn’t have been radiation as the core didn’t explode until the player woke up

Drowning

I don’t think it was the karrar for any of the survivors (I do know at least two people got it [Bart Torgal and that “medical officer” that I forgot the name of] and most likely died from it instead), but otherwise everyone died because of other creatures.

Pretty much all of that a couple aside mate

Correct answer is karrar

The infection was released before the crash and the ship before the Aurora every person died except for one by the karrar

WARPERS

Fire

@Godeater65 incorrect.The disease needs to go through multiple stages before killing someone.