Noun

1. The act of achieving or performing; an obtaining by exertion; successful performance; accomplishment; as, the achievement of his/her object.
2. A great or heroic deed; something accomplished by valor, boldness, or praiseworthy exertion; a feat.

   [The exploits] of the ancient saints ... do far surpass the most famous achievements of pagan heroes. - Isaac Barrow

   The highest achievements of the human intellect. - Thomas Babington Macaulay

3. An escutcheon or ensign armorial; now generally applied to the funeral shield commonly called hatchment. - Cussans
4. An award for completing a particular task or meeting an objective in an Xbox 360 video game, adding to the player's gamerscore.