
Secondly, do not get your hopes up about getting the detailed lights back through modding.

So they absolutely delivered on the promise of a new, dynamic lighting engine even if the end result is less than stellar. What they did is tone down all the performance heavy aspects of it in the levels themselves, dynamic lights and shadowcasters etc. Here's a relevant post from a different thread ['I think it needs to be repeated that the new lighting engine was never removed, it still has all the features they've shown and it runs on all platforms.
