So the helghast are not the bad guys?

[Severance]

Yes, they were kicked out of their homeland and forced to live in helghan where they got their military set up and their bodies effected by the harsh weather, its also why i always feel guilt when killing a helghast -_-; , more so now that the effing ISA are attacking Helghan ... the only home town left for  the Helghast.