That's.. Wow ! The drawing is pretty freakin' great, I love it, the "Aku fromSamuraï Jack" looking colossus is really neat in it's design, although I think the mise en scène should have been made otherwise, to translate the feeling of gigantism the game has, with the point of view from the ground orientated to the colossus. I wish I could be clearer on my point but my english isn't very good.
The attention to details such as the lizards hidden in the backgrounds on Ico and Yorda is a nice little touch too.
The lighting and shadowing is very good for a monochrome drawing.