How hard is it for Diablo 2 to see itself by clicking?

Diablo II was not difficult to choose at first.

Nightmare difficulty will appear during customs clearance. Nightmare difficulty will appear hell difficulty after you pass customs.

The new difficult story is the same. But immediately after the last level of the last difficulty, the levels of monsters inside are connected.

In the second act, the aura of attack and defense combat mode is different in the difficulty of nightmare. It is the frozen halo that chooses to defend.