Capabilities question

[[OKD]Mangopork]

so what elements of the game can we actually alter at this point with the existing tools?

 

Can we alter the physics?

The GUI?

HUD?

weapon::: models/animations/projectiles/damage/ROF/accuracy?

 

What about pickup items, can they be replaced and code-tweaked?

what about the AI?

Can per-pixel bullet holes be drawn on enemy models if a modder chooses to do this?

 

If someone could give me a brief lowdown of what can/can't be done out of this list i would greatly appreciate it. Thank you.