Artificially hard
First of all, I have nothing against hard games in general.
But then, there's what I call artificially hard games. Games that are actually easy, but have horrible controls, lag or whatever.
This is the latter.
Not only is this a cheap knock-off of I Wanna Be The Guy, its quality sucks, simply put: The graphics seem like they were made in 5 minutes with MS Paint and the sounds are horribly compressed (besides being annoying). Even the death note music sounds like you placed your cell phone next to a laptop speaker while playing IWBTG and used that recording.
Next up on why this game deserves a 0: Claiming difficulty as an excuse for bad level design and controls.
I'd say you've played IWBTG. You know how nice it runs, smoothly and quickly. Now look at your creation. Slow character movement, bad, slow animations and simply HORRIBLE hit detection. Difficulty does not equal being lazy with your game. Oh, and lag everywhere.
You sir, are a disgrace to any decent game programmer, trying to pass off your half-assed game as hardcore.