I see your points. I'm waiting to introduce a molotov cocktail, but, manual reload can be a nice mechanic, maybe I do it with the left button for each bullet (using it right now to advance stages in this beta). About the shotgun range, I'll take a look to watch into it later.
Later I'll implement some death animations, GFX and reactions.
The portrait format is because of two things, first, game art, second, the space stages, when he launch the rocket and reach the mothership in space, this stage will be the main part of the game.
I was expecting to use parallax in the background with 3 to 4 layers, but for a reason I don't know exactly, it's working only in the horizontal, while jumping don't move the background at all =(
Noticed it working when the player is far from the bottom, but it will affect the screen. I'm thinking in use a Scroll To on an invisible object upper and see what happen, something like a hack.
Thank you for the feedback, I was waiting for it.
Edited: the parallax problem was solved using math =D
What about the shotgun shot a bunch of spheres two time far from the actual range? But when shot, it's direction will be keep, different from the actual system with the smoke.
Updated: Death animations and sound effects.