I have a role of a tired, beaten down mobster. How can I make myself look tired as I haven't slept in ages ? Sort of like how al pacino looks.

If you mean like in terms of makeup or to naturally make yourself look old?

If naturally, don't sleep the night of, don't wash your face "too well", don't put make up on (if you're a girl.. I'm not sure if you are or not haha)

If with makeup, a darker foundation shade, dark circles under the eyes with eyeshadow, some contouring with different shades of facial powder to achieve the wrinkles and bags, and actually even some LIGHT LIGHT eyeliner that line your upper lids but have the line kind of aim DOWN towards the outside of your eyes.

I really hope this is what you're asking about :)

Thanks for your help.
I'm a guy and I have been sleeping 3 hour every day for the past month, I try to change the time I sleep so I don't get used to it, I got this light bronzer off my sister a little on the eye lids and under my eye adds to the look. That's about as far as I'll go with make up lol however I guess I have to continue till my body really gets tired.

How you treat your hair could also be something that you might want to consider here. Unkempt hair, i.e. uncombed, can also make you to appear to be tired.