The concept of a sniper roguelike certainly has some promise, however for a game with an instant failure condition on missing a shot it really needs things like proper range finding and calculation tools, having a game with bullet drop and no way to actually figure out how far away your target is without shooting and missing a shot to see how much you need to adjust is just bad game design, as the game is right now for it to be a fair to play game you need some kind of range finding tool as well as clear scope measurements or even scope adjustment tools. With further development turning this into maybe a roguelike with upgrades or just gaining more lives could be quite interesting