I will certainly work on the jumping, As for holding down, just a feature I haven't implemented yet, Sorry didn't explain that! Really appreciate the feedback though! Any ideas you think would help "juice it up" ?
I think some smaller effects, like dust when you jump, or just little art things like that. Maybe some story elements. I haven't been able to get past the thrower guy in the first level because of the jumping so maybe there is some story, but I think it would do well to have a little bit at the beginning