Yep pretty easy. I had my brother rent me 'any superhero game' since I played Green Lantern and that was about the easiest 1k ever so I figured most of them are just as easy...he came home with this and I must say it's pretty easy so far, which I don't mind.
50k GS Achievement = '
'Out Of The Blue
' - Portal: Still Alive
100% Retail: Dead Space, Green Latern:RoTM, Clive Barker's Jericho
100% Arcade: Shadow Complex, Harm's Way, Portal:Still alive, Wolfenstein 3d