"Final" in Spanish is "final". It is pronounced "fee-NALL". Please see the Related link below for confirmation of the translation.
At least is "por lo menos" in Spanish.
"Completado" is completed in Spanish.
Last Friday in Spanish is: el viernes pasado.
este último
Por último pero no menos is the best way to say "last but not least" in Spanish.
In truth, Its simply: The last airbender, with a spanish accent. Checked it on google translate.
estoy última
última oferta
the last night
ultima cuarto
el verano pasado
Espero que dure
Sometimes
Por fin libre