the game is very basic and feels stiff in control/movement...
but on the other hand it has the undergoing mood and feeling that emerges i dont know from where. it reminds me that retro era perfectly because of these flaws. it can be a hardcore game if polished or just you know like keep it basic in some aspects. today many games are just smoother, with advanced graphics in comparison to old retro games, but those old were the ones we continued playing. now players are changed, experienced advanced games. so i think balance of modern and retro in these aspects would help you. which aspects of retro games difficulty should it keep?!