Learn how to say Achievement correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word achievement:
1a thing done successfully with effort, skill, or courage:
to reach this stage is a great achievement
2 [mass noun] the process or fact of achieving something:
the achievement of professional recognition
assessing ability in terms of academic achievement
a sense of achievement
3 Heraldry a representation of a coat of arms with all the adjuncts to which a bearer of arms is entitled.