Great!
Wow, how great it is to hear english accents on newgrounds ;). That was really good, the sound was sometimes a but fuzzy (only slightly) this is especially the case with the music (when they are building etc). Really good 3d and really fluid. The bit when the man says "...all gone?" was not the greatest piece of acting though (which is the 1 criticism I have for this) amazing.
Humour was good, a bit more subtle at times that the usual slapstick or crude rubbish and there was also no silence - or motionlessness - which really helps to keep the viewer's attention. The lighting was great too and the surfaces were done quite professionally too.
Really good, I hope that you get a good mark for this! Good luck.