There's nothing fun about a tech demo for a game. Awesome, I see you designed a vehicle section that makes every other tool and gimmick useless, so I have to follow your lead until the next event happens and I am required to dance in a different way for you.
There's very little decision making in HL2, and I feel like only a little bit of non-linearity would be refreshing. Not an open world, or TOTAL FREEDOM like other games offer, but can there be more than 1 magical way to get past a part?
Like mentioned above, the second time you play it, the gravity gun parts suck and are not full of discovery, the vehicle parts are long and drawn out and not movie-like at all. The 3rd time I figure out that basement with the jumping and not getting electrocuted thing, it's no longer fun. HL2 is almost cheesey in the way they "set up" for the next gimmick, and even in the superior Episode 2, I constantly feel forced into using some gimmick. The bomb things at the end of Ep2 are unnecessary, and some rocket launcher ammo would've been far more useful. Instead I have to take the long way around since the designers wanted to force tension on the player.
ᵗʰᵉᵇˢᵍ๒ᵍᵐᵃᶥᶫ∙ᶜᵒᵐ
ᴸᶥᵛᵉ ᴼᵑ ᴬᵈᵃᵐ