Is it possible to pay my tuition in full by debit card on campus. I know you can pay some fees but I'm not sure if I can pay off everything on campus. Also where would I have to go to do this?

You should carefully read stuff you agreed to. In this instance, all payment methods were explicitly stated in your Payment Agreement form.

^ The problem was I'm with CIBC and they won't take CIBC online. Thats why I was wondering if I can pay off my account in person. I know they do international wire transfer for CIBC but that takes 5-7 weeks.

You can log into CIBC's website, set up McMaster as a bill and pay online that way.

However:
Cash / Debit
Cash and debit payments are still accepted in our office (Gilmour Hall, Room 209), although we prefer you use another Payment Method.
(Gilmour Hall, Room 209)

You should be able to set up payment accounts online on cibc. Make mcmaster the receiver, and your account should be your student number