They're both pretty long reads so here's some highlights (your're welcome )
Blog Post 1
    * Demo takes place on 3rd level of the campaign
    * Press L1 to crouch
    * Press R3 to view down rifle scope (which Level Up says is most impressive and realistic)
    * Cover system in place
          o Press L2 near cover, game puts you into cover mode (crouched or standing)
          o Once in cover, use left analog stick to pop up, lean left or lean right to take precise aim at your Helghan enemies
          o Or simply blindfire by simply pulling the trigger (R2) on your weapon
    * Minimal amount of Hud (more realistic)
          o No ammo readout (will be on weapons), no health bar (ex: King Kong & Gears)
    * No 'cooking' grenades like KZ1 (hopefully they'll add it back)
    * Awesome mini-boss (resembling--and equally highly intimidating-- the Big Daddies in Bioshock )
          o Shoot the energy packs on his back to kill him
          o Encounter was tough and strategic (the rep had to beat him for them!)
    * Realistic recoil may turn off Halo fans (hey every game can't be the same)
    * Entire game in 1st-person, no switching to 3rd-person (even when in cover mode )
Blog Post 2
    * Game has been under crazy pressure (from fans, sceptics, and haters)
          o "Halo-killer" tagged by journalists, not Sony
    * GG original ambitions hindered by PS2 limitations (now fully realized)
    * KZ2 lives up the the visual expectations
    * Everything in-engine
    * 1 character model in KZ2 has as many polygons as an entire level in the original KZ
    * Post-processing effects are amazing (effects that mask the normal sunny color pallete with grittier ones)
          o Aids in creating the art of the hostile, gritty look of Helghan
          o You have to see it to believe
    * 4x full-screen anti-aliasing
    * Incredible attention to detail
          o Animations, blood, and physics
    * Game starts with ISA invading the planet Helghan
    * New main characters
          o Main character Jan Templar replaced with ISA Legion vet Sev
          o Rico returns, no more Hakha , brief appearance by Luger (I loved those characters, but surely the new guys will rock!)
    * Evelyn from Liberation serves as your point of contact on the cruiser
          o Gamers will periodically return to one of the cruisers between missions, which will serve as a hub of sorts
All awesome info, can't wait for more .