Water Hazard wasnt that much fun, the parts where you have to fight helicopters etc is fine, but the rest of it is just plain transportation with low action.
Also, it disturbs me that freeman seems to be stearing all vehicles with his mind rather than hands. I mean, how much trouble could there have been adding the arms in the vehicles?
In HL1 I’d really say the part after Gonarch Lair, what’s the name again?