Guild Wars 2

a·chieve·ment

noun
noun: achievement; plural noun: achievements

1.
a thing done successfully, typically by effort, courage, or skill.
“to reach this stage is a great achievement”
synonyms: attainment, realization, accomplishment, fulfillment, implementation, execution, performance; More
conclusion, completion, close, consummation
“the achievement of a high rate of economic growth”
accomplishment, attainment, feat, performance, undertaking, act, action, deed, effort, exploit, success, triumph;
work, handiwork
“they felt justifiably proud of their achievement”
2.
the process or fact of achieving something.
“the achievement of professional recognition”

Edit: ah and something else; someone who thinks the bell choir is hard, pleae just stop playing games. Sorry, but this ridiculously easy Guitar Hero ripoff is amongst the most casual plays you can get. This is not directed to people with massive lags of course.