The original game was identical in terms of gameplay and it was applauded as an indie AAA work of art. Fascinating how the series turned to shit so fast. Someone should do a study on it.
The first game was original and unique. And had a good story.
So despite having bad puzzle and combat, it was still worth playing, because the rest of the experience was so good.
Also, because it was an AA game, with a small budget, people were willing to overlook some of it's flaws.
But this sequel has huge production values. Graphics and sound have improved significantly, over the original.
So now, there is no excuse for the gameplay to still be so lacking. They have the budget, so now it would be expected that gameplay would also improve.
It was expected that some of that production value would be spent in improving gameplay.
The other thing to consider, is that the story in the first game was good. It had a good structure, character growth, and a conclusion to it's theme.
This game is lacking in that department. The story doesn't have the same depth. And the ending is very lacking.