Bitcoin has accomplished a lot over the last few years and deserves a lot of credit for it but has not achieved its goal yet. Bitcoin is set to achieve global protection whereby everyone will accept its use in terms of payment methods and apply it to their business and transactions.
I think we should start with question "What is standard of bitcoin achievement? is it technology, price, adoption or what?" After that let we divide achievement to some stage.
In my opinion bitcoin still not achieve his goals in any term. I believe that bitcoin can grow bigger than today