The Nightmare 在原游戏的基础上提供了 level 7的噩梦难度的副本，推测可能是由于几个增加monster种类的大型mod相互冲突的原因，进入7级副本后一些战斗会缺少敌人，不知道有没有大佬有解决方案。
该问题的实际情况是首先黑屏跳出：
Assert Failed
(!enemies.empty()
Battle::Create in battle.cpp line 39
No enemies generated in battl
ESC to skip
ESC以后进入一些战斗没有敌人，而后战斗直接结束，没有奖励
可能存在冲突的mod勾选了以下一些：Scarlet Ruins；Moonlit Dungeon Ruins Enemy Pack；Koala's Creature Collection；Here Be Monsters: Full Release；The Home for Lost Monsters；Stonequeen's Court。其中前三个，Scarlet Ruins；Moonlit Dungeon Ruins Enemy Pack；Koala's Creature Collection都有与The Nightmare相对应的补丁，均已前置。

同时可以确定没有勾选 Increased Quest Rewards 这类增加奖励导致报错的 mod，且相关补丁和The nightmare均处于加载列表的前列
这是考虑到The Nightmare下方评论中有一个是如此回复的：
Anyone having problems with black circles: try moving all The Nightmare mods to the top of the load list with the core Nightmare mod loaded beneath the others IF you installed them. Still recommended that you adhere to the load order mentioned in this mod's description.
Also, haven't noticed any crashes that can be attributed to this mod. All crashes I have had while running TN were from other mods and were easily fixed.

原作者建议的mod排列顺序如下：
Load Order:
Faster Combat
Faster Walking
3 Trinkets
Inventory Stack
Better Nightmare Trinkets
Better Trinkets
Remove Dungeon Level Restriction
The Arena
The Nightmare - Crimson Court
The Nightmare