well its pretty decent. a little too enemy-crazy in my opinion.
didn't realize there was a story until the ending, which was sort of weird.
anyway, i think for a first level its not bad. it seems that when people make their first levels, maybe they think it can only be challenging if theres tons of enemies per screen, instead of making it difficult in other ways, with puzzles or jumping, etc. also, i found one or two wallswims, can't remember where though.
i didn't get the 'depressions' thing either...