I read your description and don´t be so hard on yourself. It is no secret that the bigger a game gets the more time you need to invest into it and your effort shows.
I am not really sure why, but for some reason in a good way, it reminds me of the lego star wars games, where you would also collect objects so that you could get to the next level.
Besides your game made me laugh in the very beginning when he said why he does not want to be in heaven. I don´t want to spoil it.