You forgot baptism:
Mk 16: 16 He that believeth and is baptized, shall be saved: but he that believeth not shall be condemned.
>> Mk 16: 16 He that believeth and is baptized, shall be saved: but he that believeth not shall be condemned.<<
Sorry dude. The second part of that verse even contradicts your assertion. It doesnt say that the lack of being baptized shall cause one to be condemned. It specifically says the believe part.
If baptism was required the thief on the cross would not have been saved and many throughout the Bible would not have been but Jesus specifically said they were. To say that Baptism is required is to say that Jesus sacrifice on the Cross was insufficient for Salvation.