I only care about achievements on xbox so the trophies don't really affect me but on xbox I like to complete games 100% as much as possible. Having said that, it really pisses me off when a game company adds more achievements to a game I completed and then it's not completed anymore, or if I'm in the process of completing it, it just puts me further from my goal. Again this doesn't really affect me kuz I don't care about trophies the same but just for personal oppinion