I loved every one of the 5 hours I played it... I just hope episode 2 is out soon or else that ending will drive me nuts
It seemed slightly more difficult than HL2, you had to work harder to get stuff done... but it was way stinkin fun. I wish there was a new weapon or two though... and maybe a couple more new characters... I did love the 'Zombines' though that was smart the way they made them.
The bottom line, though, is I should still be playing this game right now... but I can't... cause it's over :(...