Well, sh*t.
I've tried to include a sprinting script with endurance and stuff, but it causes a bsod (so if anyone's interested in instant bsod's, don't hesitate to pm me)
I've decided to abandon this feature (was meant to be a surprise :( ) and get on with the mod without this feature.
But, since I REALLY would like to see this in my mod, if anyone knows a good scripter (experienced with LeGo and Ikarus scriptpackets), have him contact me here or on world of gothic.
See you in the next update
Cheers!