Posted September 03, 2015

There were no levels missing from Chaos Theory on PC, and the PC version looked worlds better than the PS2 version and didn't suffer from the constant loading.
What you might be thinking of is the Kola Cell and that other level that were basically DLC for the original Splinter Cell... but that, on the PC, were distributed a bonus with the CE of Chaos Theory. Those were unrelated to the plot anyway.