Arrive at, come to, reach
(literally or figuratively).

('Attained' means,
reached, came to,
arrived at.)
...That I may know Him,
and the power of His resurrection,
and the fellowship of His sufferings,
being made conformable unto His death;
If  by any means I might attain
unto the resurrection of the dead. 
Not as though I had already attained,
either were already perfect: but I follow after,
if that I may apprehend that for which
also I am apprehended
of Christ Jesus