The phrase "a more difficult assignment" is correct and usable in written English.
It can be used when comparing the difficulty level of assignments, indicating that one assignment is harder than another.
Example: "After reviewing the syllabus, I realized that I had been given a more difficult assignment than my classmates."
Alternatives: "a tougher task" or "a harder project".
If one person is disadvantaged by your decision making (e.g., assigned a less desirable shift or given a more difficult assignment) multiple times, it's likely that they will perceive your decision-making as unfair.
The impeachment of Bill Clinton, for instance, is just an off-stage distraction that made the media handling of the bombing of Iraq a more difficult assignment than it otherwise would have been.
Prognosis in men with histopathologically diagnosed prostate cancer is another important area and a more difficult assignment for molecular biomarkers.
Pirlo, speaking at Italy's training base in Krakow, expects a much more difficult assignment when Italy take on Germany in Thursday's semi-final in Warsaw.
Next up, we have Australia in what should be a much more difficult assignment for this England side, but before we analyse their chances, let's just address the question of whether this series should be taking place at all.
The accusation is that City have mastered the art of beating lesser teams but do not have the nerve for more difficult assignments.
There will certainly be more difficult assignments in the coming weeks as Leicester finish the season against Manchester United, Everton and Chelsea and at this stage, with an eight-point lead, it would be harrowing for them, to say the least, if this previously unremarkable club cannot end the most eccentric year of their lives in possession of the Premier League trophy.
In other words, when students receive more difficult assignments, do they rise to the occasion and produce work that shows more evidence of in-depth thought?
Syria, however, is a more difficult case.
Fīrūz inherited a more difficult situation.
Belgium is in a more difficult situation.
