degree of difficulty; difficulty level
Used to describe how hard something is, often in games, tests, or tasks.
This game's difficulty level is high.
The exam's degree of difficulty changes from year to year.
This puzzle has a high difficulty level.
The difficulty level of this question is low.
They raised the difficulty level for the next stage.
They lowered the difficulty level for beginners.
In this game, you can set the difficulty level yourself.
The questions are presented divided by difficulty level.