Achievement

Old French achevement, from the verb achever, achiever ("to finish"). Compare Modern French achÃ¨vement, English hatchment

Full definition of achievement

(plural achievements)

The act of achieving or performing; an obtaining by exertion; successful performance; accomplishment; as, the achievement of his/her object.

1963, Margery Allingham, The China Governess Chapter 1, The original family who had begun to build a palace to rival Nonesuch had died out before they had put up little more than the gateway, so that the actual structure which had come down to posterity retained the secret magic of a promise rather than the overpowering splendour of a great architectural achievement.
2012, w, Well-connected Brains, Creating a complete map of the human connectome would therefore be a monumental milestone but not the end of the journey to understanding how our brains work. The achievement will transform neuroscience and serve as the starting point for asking questions we could not otherwise have answered, ….

A great or heroic deed; something accomplished by valor, boldness, or praiseworthy exertion; a feat.

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

(heraldry) An escutcheon or ensign armorial; now generally applied to the funeral shield commonly called hatchment.
(video games) An award for completing a particular task or meeting an objective in a video game.
Finishing the game does not give you a 100% score until you have unlocked all of the achievements.