The idea of reload bullet depending on the dice roll is really interesting!
Now the control and the design not help to make it appealing
As already said by the previous commentary :
physics need to be improved, and I will be more extreme : don't do jump button or even movement button if it is not necessary (or already said meaningful).
When I played, I only use reload and fire :p
An idea : If the game put the character at the center of the screen, static, and made enemies appeared from the left and the right, the player would have more option and more decision to make without creating you more work to be done.
But as already said (yes i repeat a lot :p) good job for finishing something, and good job for having one good design idea to work with.