This is the 426th most frequent Norwegian word.
nivå
Level.
Here, 'nivå' refers to a general scale or measure of something, in this case, difficulty.
Nivået av vanskelighet var høyere enn forventet.
The level of difficulty was higher than expected.
The word 'nivå' here represents a physical level, such as a floor in a building.
På dette nivået av bygningen finner du kontorene.
On this level of the building, you will find the offices.
In this sentence, 'nivå' is used metaphorically to signify advancement or achievement in a professional context.