Hehe, not at all actually. In Promotion you can use dither brushes and dither fill. So very fast. I think this took perhaps 3 hours or so at most. Something I would still file under mindless doodle pretty much.
Holy dither batman! Very well done. Must've took you forever though :P
reminds me of robots i used to draw back in the begining of 90's... So kind of nostalgy... or how is it called...
If big fields of dither flicker, than that means your monitor is not very well calibrated (but this is something that on most monitors can't be calibrated without extra hardware)
When I view this at 1x, my monitor decides to make everything flicker. Looks good at 2x though! 
Ah! The noise!!!
Just kidding. This looks like one mean robot.
How did I miss this?
Dithergasmic! (c) Faktablad, or so it seems. 
Great! I like it a lot! I swear the thing jitters on my monitor! Mmmmm...