There is no A6 specific code used for the AI Part,
so it should be compatable with A5 with some changes,
But I did not test that.

I did notice the player falling through the level some times, but
I could not recreate the reason,
It might be whenever the player does some moves on the outer walls.
but this level is for testing purposes only,
I have refined a more beautiful level too.

Whenever I have the node-editor ready, I can easily use any BSP Level,
but until then, the (handmade- pen and paper) node-creation is quite a pain, and takes long.