While I agree its slow development you gotta understand this guy is making this game by himself in his spare time. I doubt its his full time job so cut him some slack I think he is awesome just for continuing to work on it.
I understand its one guy thats fair, im just saying we should at least have 3 to 5 missions by now, i mean 6 years! If youre going to take peoples money to back you deliver a bit more product.