Sorry for a bit of inactivity from my side if it is about beta-testing xD. Anyway, here is my opinion ^^:
Code: The darkness is perfect! I like it alot ^^! But it looks a little bit... It could look better and I know that you can. Not that I think it is bad or anything! It is just that HOTD is much used so it doesnt really leave a big impression on me. At 0:07 you could do a zoom-in transition, you do hit the beats very nicely but you continously have the same clean cut transition. Dont forget that you have a singer singing awesome text and that you also have the undertone music (I dont know how to call the background music, its a bit high in the middle of your part) while you only focus on the loud beats. At 0:09, the scene that he rides away could be a bit faster, so that it matches the music. When the singer sings 'am I scaring you tonight' I think a creepy zombie fits better ;3. I like the ending alot. This is all just my opinion xD.
Ally: Awesome o_0!! Perfect horror feeling! I only got one little thing to say, and that is if you can add some contrast. What is supposed to be black looks greyish, but so far I really like your part ^^!
Kazemon: In the beginning, I think the clip is a little bit too red, black and white might be better but I'm not sure xD. At 0:08 and 0:49 the movement looks unnatural, I dont know the anime so I dont know if it was like that or if you did it. I'm not really a fan of 2 layers through eachother (for example at 0:31) but that is just me :]. I like your part, your character is creepy, and although the footage isnt focused on creepiness you make it creepy. I do think it could use a bit more contrast though.
Aimo, what I mean with brightness/contrast is this: (I couldnt think of another way to show you what I mean, so I added a little brightness/contrast on your part, I hope you wont mind ><!)
(I cant see them, so I have to click on the small image and then 'open image in new tab')