>>11810602>physicsUsed mostly for god awful physics puzzles.
>graphicsIt looks fine but it wasn't anything groundbreaking even back then. Though that's largely due to the pace of technological progress in the early 2000's.
>story integrated into the world instead of cutscenesAnd as you've no doubt noticed, very few games ever copied the Half-Life 2 style not-cutscenes. For a good reason.
For an actually well implemented game that never leaves the first person perspective, check out Breakdown for Xbox.
>good storyAbsolutely not. It's a sequel that introduces brand new characters like they're beloved old friends from the previous game.