Spoilers:
I'm about 2 hours in now, on chapter 3... just got done a pain
in the as antlion section in the underground garages and am now
entering a watery section. Was fairly pissed off that the entirety of
chapters 1 and 2 were Grav gun only, seeing as it was pretty much an
hour and a half of running around use the grav gun, move on. It got
very boring considering thats what the entirety of THE END OF HL2
"Episode Zero" was. It was cool then, not so cool now. I was almost
about to quit, then I finally got a pistol and a shotgun and am now
starting to have a bit more fum seeing as I have atleast a small
assortment of weapons to use instead of the god damn gravity gun.
And to note: If you thought Doom 3 was dark, it ain't got nothing on chapter 3 of Episode 1 :P
I Have noticed, unlike HL2 Episode Zero, some really weird sudden drops in frame rate. I can't describe them without spoiling a bunch, but they were in really weird places with little effects on the screen... Turned HDR off after a while, but it didn't effect some of them at all.
But judging off my first few hours, I give the game a 7.5/10... might get higher later on.