Summary: There isn't much more for me to say. Read my review on the original release. Kill-Zone H.D. offers less technical problems and a higher resolution, though there's the obvious that there happens to be no more online support.
Summary: A great idea remaster a classic as Killzone, was undoubtedly one of the best games for the PS2 and is now in HD on PSN. Just need to remastericen Resident Evil 2 is a good chance to enjoy this game.