Hey,
I'm not sure that I understood the concept here...
We have only one direction to move : down, though the character can move with 3 directions (in a 180° range). But right now, I'm feeling that your gameplay is suffering from the "only one" constraint rather than taking the opportunity :(
Maybe you should indicate the direction your character will take (when you will stop pressing Down), permitting the player to anticipate their move.
I like the ambience though, so keep on jaming and improve :)