Dungeons 3 Tips – Best Units, Evilness, Efficiency, Traps & More

Last Updated on April 14, 2025 by Samuel Franklin

Take your dungeon to the next level in campaign and skirmish levels with these comprehensive Dungeons 3 tips for units, evilness, efficiency and traps. With over 100 hours of solo and coop Dungeons 3 experience I’ve collected my best tips across these key game mechanics to beat every campaign level, earn all game achievements and dominate multiplayer battles.

Table of Contents:
Best Units List
Room Efficiency Tips
Trap Tips
Coop Tips
General Tips
Dungeons 3 FAQ

Dungeons 3 Tips – Best Units List

Players can find detailed unit information in the game almanac and your tactics will be influenced by your preferred creature types from the recommendations below. Pre-planning which units you intend to use during a level is important as this can have a large impact on what rooms you build with your limited gold (or until you claim a diamond vein).

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Thalya

As your most powerful unit and one that you start most missions Thalya is a capable level 1 fighter and should always fight alongside your overworld raiding party or dungeon defence as needed. If Thalya dies she will revive after a small cooldown and gold cost based on her level.

While fighting with Thalya manually activate her fire bomb skill as often as it is the majority of her damage output. While upgrading her with evilness does improve this damage and her basic attack slightly it’s rarely worth the investment compared to other options like extra creatures or a creature specific upgrade that is core to your army.

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Horde Units

The first units that players are introduced to these are durable units and supported by the Naga that can heal them during battle. Their additional need is a steady supply of beer and are the only units that can train for free in the arena which allows them to easily reach high levels without being a gold drain.

  • Goblin: While weak individually they aren’t targeted when there are other allied units in the fight. Their Gob-O-Bot upgrade is also surprisingly effective due to the area of effect attack that few other Dungeons 3 units offer.
  • Orc: A staple damage absorbing unit which rarely dies when supported by a healing Naga behind them, particularly in their upgraded Ironhide form.
  • Naga: One of the main support units that can heal horde units and Thalya that make them a mainstay of any horde fighting party.

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Demon Units

The damage dealers of your army that also won’t be lost like horde units if they fall in battle as they can be revived with mana which combined with their automatic health regeneration outside of combat makes them the strongest unit type. They are vital in any dungeon even if you don’t intend to use them on the front line due to their ability to generate mana for spell usage.

  • Imp: While they have great range to their attack and a welcome early support unit to the horde for damage they are quickly overtaken by the Arachnid that can deal similar damage with added durability.
  • Arachnid: The strongest unit in Dungeons 3 that can carry any single map through great speed and efficiency. This power comes from their durable nature, health regeneration, mana generation and solid damage numbers.
  • Succubus: An often overlooked demon unit that is used to convert heroes in the Torture Chamber which can be useful given they have a separate population limit. She can also be highly effective if used to temporarily convert high level heroes during a fight.

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Undead Units

The final archetype that players have available that also do not suffer death although they are slow to recover in their Graveyard. The undead also have expensive room and research requirements to be effective so the undead units should be used sparingly. Undead does have the unique zombies and skeleton archers that give you a full squad of creatures for no population points and while weak they can absorb damage away from your other creatures.

  • Banshee: A unit that has some area of effect power with their deadly scream which also slows enemy attack speed that can be useful in dungeon corridors. The banshee also offers some utility through reviving the horde in the crypt or crafting magical boxes.
  • Lich: A strong game unit the lich is a character that starts off weak but with levels and upgrades can deliver high damage icy attacks that slow their targets.
  • Vampire: Offering high durability as they can heal themselves in combat the vampire is a great 1v1 unit for those tough foes and in particular bosses. However, the expense to unlock them in the research tree each level and their average damage output makes them rarely worth it.

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Dungeons 3 Evilness Tips – How To Get Evilness

Evilness (alongside gold) is a vital game currency in Dungeons 3 that makes maximising acquisition and spending vital to success. In order to get evilness players need to either conquer good locations outside of their dungeon, capture heroes and let them die in prison or place them in the torture chamber instead.

The majority of your evilness will come from good locations that you capture and also passively provide a slow influx of this game currency once claimed. In order to maximise evilness:

  • Capture the closest good location as early as possible to start the flow of evilness currency.
  • Spend wisely with a focus on increasing your monster count and upgrades for a small pool of key units.

dungeons-3-room-efficiency

Dungeons 3 Room Efficiency Tips

The room efficiency number is a powerful and often overlooked mechanic which boost the primary function of a room. For the Hideout, Vortex and Graveyard for example this means a higher room efficiency results in faster healing when your creatures are resting. Keeping this number above 90% should always be your goal which is achieved by building all your rooms with only a single entrance. Later on when you unlock doors these can be built in the entrances to achieve 100% efficiency scores.

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Dungeons 3 Trap Tips

Traps are most useful in Dungeons 3 skirmish mode where attacks are more frequent and deadly but still have a role in defensive campaign levels. While unlocking all the traps is a large evilness investment you can maximise the return by:

  • Creating long winding paths from the dungeon entrance to your dungeon heart to increase the number of traps heroes are exposed to. This also gives you the opportunity to layer floor and wall traps.
  • Don’t forget to rotate your traps (default key: O) to ensure traps are facing the intended direction for maximum hero carnage.

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Dungeons 3 Coop Tips

The ability to play the Dungeons 3 cooperatively is a major selling point for the game and whether you are playing the campaign or one of the many skirmish challenges following these tips below ensure success and avoid potential bugs:

  • Assign each person a role from dungeon building to overworld raiding to focus each players attention.
  • Ensure that you have someone assigned to creature pick up as this can create bugs if both players attempt to creature pickup and drop off at the same time that require a game save and load to correct.
  • Communicate with your partner on where to invest your evilness and the current objective to focus on.

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Dungeons 3 General Tips

These Dungeons 3 tips will help you beat the most difficult game levels:

  • You can use spiders and dragons to attack incoming heroes by building your dungeon paths for them to intersect.
  • Sending your minions outside instantly meets all their needs provided you have the necessary resource. Use this to quickly resolve creature payday to prevent them walking to a distant treasury room.
  • Always target the healers in a hero group as healing is a significant hindrance to winning battles. This can also be done in your dungeon with a right click on the hero you wish to target.
  • Carefully consider who is the best creature for any books that you find. Damage related books should be used to buff Thalya or deadly damaging demons for example.
  • Heroes that belong to the Gunner archetype (Gunner, Bombardier or Master Gunner) should be disengaged after they summon their turret due to the significant damage it deals and long cooldown which will allow you to fight them without this turret.
  • Building a large mana Arcanium with multiple shrines and locking demons with doors will produce high mana for spells.
  • Researching has a notable impact on your power level and your first upgrades should always be specific to your army units.
  • Always purchase additional Little Snots at the start of a level with your available gold to get a faster game start.
  • If you want to sacrifice or delete a unit you can use the trap door next to your Dungeon Heart.
  • Slap your Little Snots with your hand of evil, this will boost their speed of movement and action for a short period of time.

Dungeons 3 FAQ

While not Dungeons 3 tips the below answers some frequently asked questions from the game community.

  • Dungeons 3 Mods: There are currently no Dungeons 3 mods or plans to implement them (due to development constraints), do not download any content presenting itself as a mod.
  • Dungeons 3 Cheats: The cheats for Dungeons 3 are available through console commands and not through a cheat engine or game trainer. This does require a minor modification to a configuration file to enable them which gives you the ability to activate god modes, add resources (evilness, gold and mana) and other convenience powers. I recommend this GameSpot article on the subject for the full details.
  • Dungeons 3 Multiplayer: Multiplayer gameplay in Dungeons 3 is available through the matchmaking server where you can find a duel against other players in domination and deathmatch game modes. While coop is available in the campaign and skirmish game modes.
  • Dungeons 3 DLC: There are 7 different DLCs released between February 2018 to February 2020 that each add their own new map based content and a golden pickaxe to hunt. The order of release and details of each is available on our Dungeons 3 review page.

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Written by
Samuel Franklin
Samuel Franklin is the founder and lead editor of the Games Finder team and enjoys video games across all genres and platforms.

As a seasoned Dungeon Keeper veteran Sam has delved deep into Dungeons 3, conquering all its challenges on the brutal Difficult setting. Having amassed over 100 hours in the game, he has not only mastered the campaign but also unlocked every achievement alongside fellow dungeon masters in co-op mode. Dungeons 3 truly scratches that strategic itch for Sam and has reigniting his joy of meticulously crafting and defending an underground domain, reminiscent of the legendary Dungeon Keeper.

1 Comment

  1. Great game.
    My favorites are the ogre plus naga for tank and goblin plus imp for damage.

    Reply
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