This is offered in the spirit of a friendly drive-by grammar nazi offering some proofreading.
" In addition to these rules, we ask that you are complicit with TF2Center administrators and their requests." -- replace "are complicit with" with "comply with" or "respect" or "cooperate with". Complicity means "doing something illegal." 
But the bigger deal for me is that most of the rest of the rules are just a list of "bad things" -- nowhere does it actually say whether they're allowed or prohibited! Under the section headings for sections 1 through 5, there should be something added like:
"The following are prohibited on TF2Center:"
Alternatively, each of the prohibited things would need to be rewritten to include "... are not allowed" in the appropriate places.
Section 6 obviously does not need this, since its items stand alone.
