The puzzles that a blind three-year-old can solve are spaced farther apart with more time for puzzles that may lead to actual harm.
It's not because their AI has been improved, just because is a less-than-infinite supply of ammunition and med-packs everywhere and the enemies are more varied. The best happens to be the HDR rendering, which gives the game some atmosphere, and works especially well with the fact that it's set at sundown. Though it still has all the regular linearity and low-resolution graphics and bland AI of Half-Life 2, and it's still on their heavily (and horribly) modified version of the Quake engine, there are actually redeeming qualities that expose themselves. Though it still has all the regular linearity and low-resolution graphics and This is MUCH better than anything Valve has pulled off before. This is MUCH better than anything Valve has pulled off before.
