Quote: "1. A Flashlight"
No.
Quote: "2. can you make "round" rooms ? Because of the "cluster" system ?"
I have seen rounded rooms yes. It just involves a few segments which have curved walls
Quote: "3. Perhaps i want to implement a chainsaw as a weapon....possible ? *g*"
There isn't one at the moment.
Quote: "4. Collision detection like in "Soldier of fortune" ?"
It has collision detection (

) - do you mean does it have the gore of SoF? It does not
Quote: "5. Different types of light ? Pointlight , ... ?"
I think it's just normal at the moment. But I could be wrong.