Nightmare difficulty was introduced in patch 7.13. It is the highest difficulty level available in Dungeon Defenders. While not yet generally available, players who have bought the Quest for the Lost Eternia Shards Complete DLC on Steam can host maps on Nightmare. Any player may join these, regardless whether or not they bought the content.

Differences From Insane

The increase in difficulty from Insane to Nightmare is much greater than the from Hard to Insane. There are also several major differences from normal game play:

  • Hero, tower and pet stats are adjusted.


Stat NM Modifier
Health (Squire, Countess, Jester and Barbarian) ~5.28x
Health (Other Heroes) 7.75x
Damage ~0.16x
Casting Rate >1.0x
Resistances 0.55x
Weapon Projectile Speed 0.1x
Self-Heal Mana Cost 0.5x


NM Modifiers
Defense Type Health Damage / Potency Range
Apprentice Towers 1.625x 1.625x None
Squire Towers
Traps 0.75x 1.35x
Auras 0.85x 0.75x

1.125x (Electric)

~4x (Healing)

Jester Defenses 1.625x 1.625x None
Minions 1.625x 3.25x
Beams 1.625x 1.625x

Tower Notes and Exceptions


  • Pets are significantly more effective, notably melee pets such as the Mega Chicken.

Other Changes

  • Eternia Crystals have 5x more HP.
  • The quality of loot is drastically better, especially core drops and map-exclusive items.
  • Spiders spawn at random locations (i.e. not necessarily coming from normal spawn doors, but dropping from above) on every wave, on every level.
  • Sharkens and Djinns spawn at the normal spawn locations on nearly all maps. On some maps though, Djinn spawn at Wyvern spawn locations instead.
  • Goblin Copters spawn at the same locations Wyverns appear. They do not spawn on maps that lack Wyverns.
  • Ogres spawn much more often and earlier than usual, such as on the first wave in The Deeper Well. Heroes without significant upgrades to damage resistances on their armor equipment may find themselves killed in one hit. Ogres on Nightmare may also have an elemental affinity.


  • Like Insane, the Build Phases have time limits on Nightmare. Make every second count early on.
  • If you're first starting to play maps on Nightmare, look into Hero Shops to buy cheap Mythical items. Sometimes you can find a piece of gear for 1-2 million Mana, and it will pay for itself once you get Mythical loot dropping for you!


  • Remember that you get a set bonus for wearing all armor pieces of the same type (Leather, Mail, Chain, Plate or Pristine). For Godly quality armor and below, the set bonus is +25% to all stats given. Armor of Mythical quality or higher get higher stat bonuses, but all equipped pieces must be at least Mythical to get any set bonus at all.
  • In order to reach the 90% damage reduction cap per damage type on Nightmare, your armor will need 164% resistance total.
  • If you are dying too much, prioritize upgrading your resistances over hero health. Having 45% physical resistance will allow you to last almost twice as long in nightmare, which is more effective than spending armor upgrade levels on Hero Health.


  • Cover your towers. A brilliant defense means nothing if it gets webbed by spiders. Your defense should be as close to the crystal as possible, to minimize the chance of spiders spawning behind it. However, always have towers pointed inwards to deal with spiders, as they seem to love spawning on your crystal(s).
  • Wyverns fly a lot faster than normal. Make sure your towers have sufficient range and attack rate. You could sometimes need some extra defenses to handle wyverns (additional offensive tower, Ensnare Aura, or even Darkness Trap along with Ensnare Aura).
  • If ogres are problematic for you, focus on single-target towers and walls. A squire with a high block value can tank the ogre while your towers kill it very easily. Note that elemental towers may be ineffective against an ogre if it's of the same type, so don't overload on elemental damage without some way to remove affinities.
  • Distract ogres. Having three ogres smashing your defenses is better than four. Simply move behind them within melee range (even if you're ranged) and attack them. This should get their attention and turn around. You'll have enough time to get out of melee range of the ogre, but don't go too far or they'll lose interest and head to the crystal as normal. If you lose the attention of an ogre for any reason, get within melee range again and attack. This should get him to focus on you again.
  • The Apprentice Guardian and Huntress Guardian familiars will be very useful and assist your towers greatly. The towers that it buffs can easily do more than twice their damage. Even the Hard summit reward pets are worth their weight in gold, and will contribute more to overall DPS than any DPS pet.
  • Endless Spires is a good map to start playing Nightmare as there is lots of room to kite the ogre in the first wave.


  • "Chaos" replaces Nightmare difficulty in Dungeon Defenders 2 which has different mechanics.
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