Wake me up when September ends

Last month seemed like the busiest month I ever had.Almost every weekday I reached office at 5 or 6 am,and work all the way to 7pm,just to prove that I am not a bum to my manager.He assigned me tons of works at the beginning of September,and requested me to finish them within 3 weeks.Some of the functions are half done by other colleagues,and I am the one who clean up the mess.However,I did prove my value and my abilities by finishing almost everything on hand.I can't really finish all the things due to some requirement changes and I need more time to apply the new changes.
So,in your face,Mr Manager...