Normal
Something like your proudest achievement may not have changed and therefore it is fine to use the same example. Do consider whether your answer including that example could be improved though - usually reading your last application with a fresh pair of eyes can spot areas in which you would say something differently/more concisely etc.With the other questions, like the why the career/why the firm, do consider how you could update/refine those answer too - it will be useful to try and show any evidence gained of learning more about the career or the firm since your last application.
Something like your proudest achievement may not have changed and therefore it is fine to use the same example. Do consider whether your answer including that example could be improved though - usually reading your last application with a fresh pair of eyes can spot areas in which you would say something differently/more concisely etc.
With the other questions, like the why the career/why the firm, do consider how you could update/refine those answer too - it will be useful to try and show any evidence gained of learning more about the career or the firm since your last application.