steam guard help

i have a guys password and username on steam but steamguard blocks me from logging into hes account, is there anyway of bypassing this?

ye by going to the nearest cliff you can find and jump and yell steamguard let me in!!! and should work

No, even if you could bypass it you couldn't do anything on the acc

Get his email and password.

Well considering you have the name and password, you could just assume that the username is a @Gmail or @yahoo and test those, since those are the most popular email services. Then if you find that one of those is a real email you can test the steam password and see if it matches...