Below is a set of standard rules that the Total Fight Challenge abides by.
All fighters are informed prior to fighting about legal techniques and fouls.
This list below is for the general publics information and not a definitive list.

Legal Techniques:
Punches, Kicks, and Knees while both fighters are standing
Throws and take downs
Punches to the head, body while on the ground and knees to the body
Submission Holds while on the ground or standing

Ways to win:
Knock out
Technical Knock Out
Submission
Judges Decision (10 Point Must System)
Doctors Intervention
Referee Stoppage due to fouls

Fouls / Illegal Techniques:
Elbow strikes
Kicking a downed opponent
Deliberately slamming an opponent on his head
Throwing an opponent out of cage or ring
Striking to the back of the head or spine
Small joint manipulations
Gouging, groin strikes, fish hooking or other foul tactics
RULES