Uncharted 1 can definitely be a bit of a grind. I happened to play it after the second and I was a bit dismayed by just how much fighting there was. Also, it doesn't get any easier as the game presses onward.
The enemies at the end are an absolute nightmare and all of the headshotting techniques you've perfected over time no longer do you much good. Pretty much every enemy in the game is a bullet sponge, but I'm glad to say that they really improved that the second time around.
Uncharted 2 is a MUCH better game all around and 3 continues that trend, even if it doesn't quite measure up to 2. There's more of all the stuff that makes the series great and less shooting. Don't get me wrong, there's still plenty of shooting there (probably just a bit more than there needs to be). All around though, it's much more evenhanded.


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