So we will do the following things:
we will redo the shadowing. For example we make the shadows of dynamic props react on the actual light sources.
We make new weapons and weapon models and we'll improve the ai of the prisoners, following the player.(civillians actually)
The stalker, you may know from ep1, will become an active enemy(which will fight you)
Weapons we will make:
We may add more but we'll see.