noun /əˈtʃiːvmənt/
a) The act of achieving or performing; an obtaining by exertion; successful performance; accomplishment; as, the achievement of his/her object.
[The exploits] of the ancient saints ... do far surpass the most famous achievements of pagan heroes. -
b) A great or heroic deed; something accomplished by valor, boldness, or praiseworthy exertion; a feat.
The highest achievements of the human intellect. -
Wikipedia foundation.