Difficulty - child's play: Trial and error to the point of absurdity. It isn't so much "hard" to beat the final boss, so much as you just have to repeatedly do the same thing until you (through luck) kill him.
Concept - quite interesting: I like the idea of 8-bit graphics, it's quite a refreshing look at gaming.
5/5
Fun game, but it's mostly a "one hit wonder". You play through it, waste an hour or so of your life to enjoy the laughs of "Austin Powers" type comedy, and move on. What I like in a flash game!