Baldur's Gate 3 Arcane Tower: How to complete & defeat Arcane Turrets in BG3

Baldur's Gate 3 Arcane Tower: How to complete & defeat Arcane Turrets in BG3
Images via Larian Studios

Written by 

Harry Boulton


4th Sep 2023 16:28


The Arcane Tower in Baldur's Gate 3 Act 1 is a deceptively tricky place that contains many useful items and important sidequest details, and we've got everything you'll need to complete it and defeat the Arcane Turrets too.

Baldur's Gate 3 contains many challenging areas, but few that kick you in the teeth as hard and as often as the Arcane Tower found in the Underdark.

If the Arcane Turrets don't stop you, the puzzles, challenges and potential enemies just might bring the game to a screeching halt. Here is everything you need to know to traverse the Arcane Tower in Baldur's Gate 3.

How to defeat Arcane Turrets in Baldur's Gate 3

Image of the Arcane Cannon resistances in Baldur's Gate 3
Click to enlarge

On your approach to the Arcane Tower in Baldur's Gate 3, you will need to defeat a handful of Arcane Turrets - and to do this, you will have to do at least 10 damage in a single attack, as the Sturdy effect will nullify any damage otherwise.

What makes this even harder is their vast number of resistances, which either half the incoming damage or completely nullify it.

However, while you can progress through the Arcane Tower and defeat any of the Arcane Turrets along the way, completing the tower itself disables all of the surrounding turrets, letting you avoid any tricky combat encounters. 

Arcane Turret weakness & resistances in BG3

Here is a full list of the Arcane Turret's resistances in Baldur's Gate 3:

  • Fire damage halved
  • Piercing damage halved
  • Poison damage nullified
  • Psychic damage nullified
  • Slashing damage halved

As you can see, it is quite a tricky fight to navigate, but any lightning damage you deal to an Arcane Turret is doubled, making it quite a handy form of offence.

How to complete the Arcane Tower in Baldur's Gate 3

Image of the Arcane Tower mushroom jump in Baldur's Gate 3
Click to enlarge

Follow our step-by-step guide below to find out how to complete the Arcane Tower in Baldur's Gate 3 and fix the elevator:

  • Either sneak, run past, or defeat the Arcane Turrets outside of the Arcane Tower and jump over to the mushrooms to the south of the main entrance at X:3 Y:297 (shown in image above)
  • Navigate and jump across the mushroom path until you reach the ones growing from the Tower itself - to jump down from these, you will have to take a small health penalty.

Image of the Sussur Flower tree in Baldur's Gate 3
Click to enlarge

  • Continue into the garden and pick up a Sussur Flower from underneath the glowing blue tree - you only need one to complete the Arcane Tower

Image of the door and hole outside of the Arcane Tower in Baldur's Gate 3
Click to enlarge

  • Head back east from where you came and there will be a locked door into the tower. You can either use a lockpick to break in (Astarion is good for this if you've got him as a companion), or squeeze through a hole that is revealed by a perception check at X:52 Y:302

Image of the Arcane Tower engine in Baldur's Gate 3
Click to enlarge

  • Once inside the room, walk up to the engine and interact with the plate at its front. This should prompt you to combine materials, and all you need to do is insert one Sussur Flower to power the engine

Once you have done this, not only will the Arcane Tower receive power again - activating the elevator and all of the lights - but all of the Arcane Turrets in the surrounding area will be disabled.

Now you can explore the Arcane Tower freely in Baldur's Gate 3, taking the elevator after the stairs to the right of the engine to have a look around the Tower's four floors.

What's inside the Arcane Tower in BG3?

Image of Bernard hugging the player character in the Arcane Tower in Baldur's Gate 3
Click to enlarge

You can find a number of things inside the Arcane Tower in Baldur's Gate 3, ranging from items that complete existing quests, to ones that start new adventures. Here is everything that you can do within the Arcane Tower:

  • Find the Timmask Spores and Tongue of Madness needed to complete the 'Help Omeluum Investigate the Parasite' quest
  • Speak to (or fight) Bernard - the robot on the top floor
  • Start the 'Discover the history of Prince Orpheus' quest by finding 'Orpheus, Prince of the Comet, Part One: Betrayal' and deciphering it with 'The Careful Art of Tir'su Ciphers'

If you want to ensure that you don't have to fight Bernard, you must recite lines of prose back to him. Only certain classes appear to be able to do this though (with the Bard and Warlock being two of them), so make sure that you have the right character speaking to the robot - you might even get a hug out of it.

So, that's everything that you need to know about completing the Arcane Tower in Baldur's Gate 3, showing you how to take down the numerous Arcane Turrets, and what you can find once you're inside.

For more help during your travels through Faerûn, make sure to check out our Baldur's Gate 3 homepage. Or, if you want to find out more about the Strange Ox, How to find the Nightsong, or the best Baldur's Gate 3 Cleric build, stick with GGRecon.

Harry is a Guides Writer at GGRecon, having completed a Masters of Research degree in Film Studies. Previously a freelance writer for PCGamesN, The Loadout, and Red Bull Gaming, he loves playing a wide variety of games from the Souls series to JRPGs, Counter-Strike, and EA FC. When not playing or writing about games and hardware, you're likely to find him watching football or listening to Madonna and Kate Bush.

Is Baldur's Gate 3 playable on macOS? M1, M2 & Intel Macs explained
Baldur's Gate 3 Patch 5 notes, new ending, new difficulties & all changes
Where is Thrumbo in Baldur's Gate 3?
Should you let Abdirak hit you in Baldur's Gate 3?
How to find the Nightsong in Baldur's Gate 3 & complete the Gauntlet of Shar