Anyone up for murdering Stahl for what he did to the Hellgast....FOR KILLING EVERYONE! I mean an entire race dead for his ambitions. I mean I know the hellgast are pretty extreme but in reality they only wanted Vekta back and force earth into surrendering so they don't try to take theyre homeworlds...again. SO instead he gets every man woman and child of the hellgast killed not a one left. Anyone else notice that like Only Sev found that kind of F'ed-up? Not a pang off remorse for essentially killing an endless number of civilians? I mean they're whole "We don't kill the innocent or P.O.W.s...unless Ricos there..." thing was really the only thing the ISA had to show that they were the good guys to begin with.
 
At this point I've been pushed from mildly sympathetic to the hellgast to extremely... Christ can they're existence suffer any more? oh wait no theyre all dead... except for Stahl... tenacious bastard.

^ Well, both of those things came from Stahl Arms so all we know both the nukes and the prisoner explosions is Stahl's thing.

I still feel like that nuke didint kill the helghast. It might have been as insubstantial as an EMP. I mean, minutes later helghast were already walking around on the surface and a freaking escape pod without much armoring seemed totally fine even though it was at ground zero of the planet destroying nuke.

" in reality they only wanted Vekta back and force earth into surrendering so they don't try to take theyre homeworlds...again.  "

"
I just finished the game and that must be it, an emp effect. otherwise Stahl, 'that tenacous bastard' the one thing I do agree with the OP about, has 2 soldiers and no women to repopulate helgan with. 
 
But you know what, FUCK the helgast. PPl. get confused, and that blows me away, because right and wrong here is relative. Rico goes too far with his vietnam type crazyness and killer instinct, vs the helgast  subjugating everybody under their military bootheel. And that was the Helgast being mellow before Stahl decided to take it to it's logical conclusion. 
 
the Helgast were evil and they did evil things as a matter of course, and as a consquence evil things were done to them. That stuff happens in real life. Killzone was interesting because it didn't have every ISA soldier acting like gandalf the white.  And actually I suspect Gandalf would at least understand what I was saying here, simple.
 
But here's the thing i really wanted to go off about, what a lame ending! I know this is a spoiler thread, but I will just leave it there. What a lame, lame, lame ending to a pretty damn good FPS. And..no more spiders in Killzone. If they do another, I better not see one fucking spider. hell why even waste ammo on them.... "

I just beat it finally....and I agree, what a lame lame ending.  Ending the game with a rail shooting sequence no less.  F*ck that.  When I was fighting the big robot thing...MAWLR?  I was thinking, hummm this probably better than the 2nd game. But, nope, they ruined it.  So 2nd Killzone has better singleplayer and multiplayer. 
 
And GG really needs to get better guys to do their cutscenes. Some of the scenes are so strangely paced and incoherent. Plus the sound seems waaay off in all of them too...like explosions barely make any noise and sound is cutting in and out (hopefully this just wasn't my game).   Overall it was decent...the actual FPS bits are the most fun. If the game would just stick to that then it would be really good.