The phrase "achieved the difficult task" is correct and usable in written English.
You can use it when discussing the successful completion of a challenging assignment or goal.
Example: "After months of hard work and dedication, the team finally achieved the difficult task of launching the new product on time."
Alternatives: "accomplished the challenging task" or "completed the tough task."
"Engineers of Victory" achieves the difficult task of being a consistently original book about one of the most relentlessly examined episodes in human history.
It's dominated by the kind of sub-three-minute pop songs, heavily indebted to seventies rock, that Supergrass has perfected; "Za," "Rush Hour Soul, Gracece," and the blink-and-it's-over "Never Done Nothing Like That Before" achieve the difficult task of sounding effortless.
Henderson wraps the plot up a bit too neatly, but she paints a compelling portrait of Generation Xers who fiercely reject their parents' values of free love, and achieves the difficult task of making Jude's ideological shift understandable to readers.
Tan et al are to be congratulated for achieving the difficult task of synthesizing the many disparate pieces of data on the subject of exchange transfusion (ET) [ 1].
They have achieved this difficult task not by selecting Adil Rashid in their Test squad for Cardiff, but by creating the possibility that they might leave him out of their final XI next Wednesday morning.
Once the initial stage of design is achieved, control engineers face the difficult task of Fine-Tuning for a more realistic environment, where the environment conditions are as similar as possible to the real system.
These 2 tasks can not be achieved using only dialog-based HMI because these require to move unresistered spot and to instruct phisical amount of operation, proposed method can realized to achieve these difficult tasks.
Within a year, he had achieved the far more difficult task of convincing the police and the relevant London boroughs.
Up hill determination is when you work to achieve a difficult task despite many or large obstacles in an effort to achieve your goals.
"A coordinated response" is required to achieve the "possible, although difficult" task of reversing the trend.
