Introduction
Honour Mode is Baldur's Gate 3's ultimate challenge: one save file, permadeath on TPK, and every boss fight enhanced with Legendary Actions that don't exist in any other difficulty. With a 0.1% completion rate on Steam (as of 2024, now around 2-3% after patches), finishing Honour Mode earns you the Golden D20 — a permanent skin for your in-game dice. This guide covers every Legendary Action in the game, the most dangerous TPK hotspots ranked, four proven safe builds, and the golden rules for surviving when things go wrong.
Honour Mode Rule Changes
| Rule | Standard | Honour Mode |
|---|---|---|
| Save Files | Unlimited | Single save file. No save-scumming. |
| TPK | Reload from last save | Game over (option to continue in Custom mode, forfeiting the achievement) |
| Boss Actions | Standard | Legendary Actions added to most bosses |
| Haste / Bloodlust | Extra full Action | Extra attack only (no extra spell casts from Haste) |
| Damage Riders (DRS) | Many sources stack multiplicatively | Fixed — most DRS interactions now add, not multiply |
| Pact of the Blade Extra Attack | Stacks with martial Extra Attack | No longer stacks |
| Vulnerability | Doubled damage | Same |
Complete Legendary Actions List
Act 1 Bosses
Owlbear (Owlbear Nest)
Legendary Action: Call Consort
- Trigger: Takes damage
- Effect: Summons a second Owlbear with full HP. This turns an already-dangerous CR 3 fight into a double-boss encounter at level 3-4.
- Counter: Kill the Owlbear Cub quickly before focusing the mother. Or avoid this fight entirely — you don't need to kill the Owlbear to recruit the cub. Just talk to the mother with Speak with Animals and leave.
Phase Spider Matriarch (Whispering Depths)
Legendary Action: Arachnid Dominion
- Trigger: Any spiderling dies
- Effect: All remaining spiderlings gain Haste-like bonuses (+2 AC, extra movement). Matriarch also becomes enraged (+1d6 poison to attacks).
- Counter: Use AoE (Fireball scrolls, Alchemist's Fire) to kill multiple spiderlings simultaneously. Focus the Matriarch first — she's the real threat.
Auntie Ethel (Teahouse)
Legendary Action: Hag's Trickery
- Trigger: Ethel drops below 50% HP
- Effect: Creates 5 illusory clones of Ethel. All clones and the real Ethel cast a spell each round. The clones have 1 HP each but are indistinguishable.
- Counter: Magic Missile — each missile auto-hits and can target a different clone, stripping their images. One Level 3 Magic Missile (5 missiles) clears all 5 clones. Bring scrolls if no caster.
Grym (Adamantine Forge)
Legendary Action: Adamantine Reverberation
- Trigger: After being hit by the forge hammer
- Effect: Grym gains 10 temporary HP and creates a shockwave (4d8 Thunder, 10m AoE). The shockwave also applies Reverberation.
- Counter: You were going to kill him with the forge hammer anyway. The extra 10 HP means one more cycle. Stay at range when triggering the hammer. Alternatively: have an Owlbear from the top rope — use Enlarge on a Druid in Owlbear form and jump from the platform above onto Grym. One-shot possible with enough height.
Act 2 Bosses
Gerringothe Thorm (Tollhouse)
Legendary Action: Price of Avarice
- Trigger: Any character carrying gold takes an action
- Effect: Gerringothe deals damage proportional to the amount of gold the character is holding. A character with 5,000g takes 50-100 force damage.
- Counter: Deposit all gold into a container at camp before this fight. Kill the floating skulls (Visages) immediately — they're the adds.
Malus Thorm (House of Healing)
Legendary Action: Surgical Precision
- Trigger: Any character in melee range takes an action
- Effect: Malus performs an additional attack with +10 to hit, dealing 4d8+5 piercing damage.
- Counter: He can be talked to death (Persuasion/Deception checks to convince the nurses to kill each other, then convince Malus to let them "practice" on him). If fighting: stay at range, use Radiant damage (he's Undead).
Balthazar (Gauntlet of Shar)
Legendary Action: Necrotic Burst
- Trigger: Any summoned undead dies within 10m
- Effect: The dying undead explodes for 4d8+4 Necrotic damage in a 5m AoE.
- Counter: Balthazar is a deadly fight — possibly the most dangerous in Act 2. Fight him in his initial chamber, not in the Shadowfell. Before entering the Shadowfell, attack Balthazar in his lab. Use Counterspell to prevent his Raise Dead. Push him off the ledge if possible (his loot will be lost). If you must fight in the Shadowfell: bring the Smokepowder Barrel strategy — place barrels before the conversation, trigger after.
Yurgir (Gauntlet of Shar)
Legendary Action: Orthonic Handbomb
- Trigger: Any character ends their turn within 10m
- Effect: Yurgir throws a cluster bomb at that character. The bomb deals 8d6+4 Force damage and scatters additional bombs.
- Counter: You can talk Yurgir into killing himself (Persuasion — he kills his merregons, his displacer beast, then himself). Lae'zel's Githyanki dialogue options help here. If fighting: spread your party. Kill the Displacer Beast first — it gives enemies Displacement.
Ketheric Thorm (Moonrise Rooftop)
Legendary Action: Tyrant's Authority
- Trigger: Any character uses a spell of Level 3 or higher
- Effect: Ketheric casts a reaction spell that forces the caster to make a DC 16 Wisdom save or be Frightened (disadvantage on attacks, cannot move closer).
- Counter: Use Level 1-2 spells for buffing. Martials unaffected. Free Aylin immediately — her DPS is essential. Use Radiant damage.
Apostle of Myrkul (Mind Flayer Colony)
Legendary Action: Gaze of the Dead
- Trigger: Any character ends their turn within 18m
- Effect: Myrkul drains a character, dealing 6d8+9 Necrotic damage and healing for the same amount.
- Counter: The #1 most dangerous fight in Act 2 Honour Mode. Strategy:
- Free Aylin on turn 1
- Kill the Mind Flayer on the platform immediately (it can stun-lock a character)
- Use Darkness or Fog Cloud on Myrkul — he can't target through it, but melee can still hit him
- Bone Chill (cantrip) prevents his healing
- Do NOT stand on the platform — Myrkul's scythe sweeps are devastating
- Bring a Cleric with Calm Emotions (prevents Frightened from Ketheric)
- Wall of Fire on the platform deals passive damage every turn
Act 3 Bosses
Cazador Szarr (Cazador's Palace)
Legendary Action: Vampiric Swarm
- Trigger: Cazador drops below 70%, then 40% HP
- Effect: Cazador transforms into a swarm of bats, teleports to a random location, and summons 4+ Giant Bat adds. All bats deal bonus Necrotic damage.
- Counter: Cast Daylight (Level 3, 18m radius) in the arena before the fight. It prevents his regeneration and gives him disadvantage. Free Astarion from the ritual quickly — if Cazador completes 3 rounds of the ritual, Astarion dies permanently.
Ansur the Heart of the Gate (Wyrmway)
Legendary Action: Draconic Wrath
- Trigger: After Ansur uses his lightning breath
- Effect: Ansur gains 100 temporary HP and Stormheart Nova charges. After 2 rounds, he unleashes Stormheart Nova: all characters in the arena take 18d6 Lightning damage (DC 20 Dex save for half).
- Counter: The safest spot is behind the crystal formations that appear in the arena. They block the Nova entirely. Alternatively: Globe of Invulnerability scroll (sold everywhere in Act 3). This is the single most dangerous AoE in Honor Mode — 18d6 averages 63 damage, which can one-shot your entire party.
Raphael (House of Hope)
Legendary Action: Hellfire Overload
- Trigger: Raphael drops below 50% HP
- Effect: Raphael becomes overloaded with Hellfire. At the end of his next turn, he unleashes a blast dealing 12d12 Fire damage in a massive (20m) AoE.
- Counter:
- Use the four Soul Pillars. Each destroyed pillar deals 30+ damage to Raphael and removes a soul charge.
- Hold Monster on Raphael. His Wisdom save is only +7. A Sorcerer with Arcane Acuity stacks can lock him down for the entire fight.
- Globe of Invulnerability for the Hellfire Overload turn
- Hope's Divine Intervention: Sunder the Heretical deals massive Radiant damage
- Yugir can be convinced to side with you (DC 30 Persuasion)
- Bring the Orphic Hammer (obviously — Hope gives it to you)
Orin (Temple of Bhaal)
Legendary Action: Bhaal's Edict
- Trigger: Each round, Orin marks a character with Bhaal's Edict
- Effect: The marked character has Bane (1d4 penalty to attacks/saves). If they don't deal damage to Orin by the end of their next turn, they are instantly killed.
- Counter: Magic Missile guarantees a hit. Have the marked character cast a Level 1 Magic Missile (scroll works) on Orin. The 12-stack Unstoppable charges are stripped by Magic Missile. Keep one caster with Magic Missile purely for stripping Unstoppable.
Netherbrain (Final Battle)
Legendary Action: Psionic Annihilation
- Trigger: The brain drops below 50% HP
- Effect: Marks platforms for destruction. At the start of each subsequent round, a marked platform is destroyed. Any characters on it fall to their death (no save).
- Counter:
- Bring as many allies as possible (Gather Your Allies quest)
- Ignore the dragon, the dream guardians, and the Emperor — full rush the brain
- Globe of Invulnerability on the final platform
- Have 2+ characters with Disintegrate or high single-target damage
- Orphic Hammer / Silver Sword for melee
- Channel Divinity for max-damage Chain Lightning
TPK Danger Ranking: Top 8 Most Dangerous Encounters
| Rank | Encounter | Act | Why It Kills Honour Runs |
|---|---|---|---|
| 1 | Myrkul (Apostle) | 2 | Mind Flayer stun-locks + Myrkul's constant drain + Frightened aura. Most failed Honour runs end here. |
| 2 | Ansur | 3 | Stormheart Nova one-shots unwary parties. 100 temp HP extends the fight. |
| 3 | Raphael | 3 | Hellfire Overload into 6 Cambions spawning. Soul Pillars extend the fight. |
| 4 | Githyanki Patrol | 1 | Level 4-5 party vs 4 Level 5 Githyanki. Multiple attacks per round, Action Surge, Misty Step. Unexpected difficulty spike. |
| 5 | Balthazar | 2 | The Shadowfell variant is a nightmare — massive undead army, narrow platforms, instant-kill ledge. |
| 6 | Orin | 3 | Bhaal's Edict instant-kill mechanic + 12 Unstoppable stacks. If you don't understand the mechanic, you wipe. |
| 7 | Owlbear | 1 | Legendary Action summons a second Owlbear. At level 3-4, two Owlbears are lethal. |
| 8 | Netherbrain | 3 | Platform destruction forces speed. Without enough burst damage, you run out of ground to stand on. |
Four Safe Builds for Honour Mode
1. Tavern Brawler Open Hand Monk (8 Monk / 4 Thief Rogue)
Why it's safe: Insane single-target damage + Stunning Strike shuts down bosses. Minimal gear dependency.
| Level Split | Key Features |
|---|---|
| Monk 1-6 | Open Hand subclass. Tavern Brawler feat at Level 4. Manifestation of Body/Mind/Soul for bonus damage. |
| Thief Rogue 1-4 | Extra Bonus Action. Fast Hands. ASI or Alert feat. |
| Monk 7-8 | Evasion, Stillness of Mind. |
Stat priority: Strength 17 → +1 from Tavern Brawler → 18 → ASI to 20 → Everlasting Vigour potion to 22. Dexterity 14 (medium armor from a dip works too). Wisdom 16. Constitution 14.
Core gear: Elixir of Hill Giant Strength (sets Str to 21, frees stats for Dex/Wis/Con). Gloves of Soul Catching (Act 3, Save Hope quest). Boots of Uninhibited Kushigo (Wis to damage).
Damage rotation: Flurry of Blows: Topple (knocks prone) → Stunning Strike → two more attacks with Advantage against prone/stunned target.
2. Gloomstalker Assassin (5 Gloomstalker / 4 Assassin / 3 Champion or Battle Master)
Why it's safe: Wins initiative. Deletes priority targets before they act. Can escape any failing fight.
| Level Split | Key Features |
|---|---|
| Ranger 1-5 | Archery fighting style. Gloomstalker at 3. Extra Attack at 5. Sharpshooter feat at 4. |
| Rogue 1-4 | Assassin at 3. Guaranteed criticals on surprised enemies. |
| Fighter 1-3 | Action Surge. Champion for crit range (19-20) or Battle Master for maneuvers. |
Opener: Initiate combat from stealth → Surprise round → 5 attacks (2 normal + 1 Dread Ambusher + 2 Action Surge) all with Advantage and auto-crits from Assassin.
Escape: Cunning Action Hide + Dash + Misty Step. Invisibly flee to camp if a fight goes wrong.
Core gear: Titanstring Bow (Act 1) + Elixir of Hill Giant Strength. Dead Shot (Act 3, sold by Fytz the Firecracker). Mask of Soul Perception (+2 initiative).
3. Light Cleric Radiant Orb Stacker (12 Light Cleric)
Why it's safe: Radiant Orb stacking gives enemies -10 to attack rolls. Mass healing word provides AoE sustain. Warding Flare imposes disadvantage on attacks against you.
Core mechanic: Luminous Armour (Act 1, Selûnite Outpost hidden chest) + Luminous Gloves (Act 2, Ruined Battlefield) + Coruscation Ring (Act 2, Last Light Inn cellar). Every Radiant damage instance applies 2+ Radiant Orbs (1 orb = -1 to attack rolls). Spirit Guardians at Level 5 deals Radiant damage on contact → 2 orbs per tick per enemy.
Result: With Spirit Guardians active and the full Radiant set, every enemy within your aura has -8 to -10 attack rolls per round. They essentially cannot hit you.
Survival tools: Warding Flare (reaction, imposes disadvantage on an attack), Radiance of the Dawn (Channel Divinity, 2d10+Level Radiant in massive AoE), Destructive Wave (Level 5). Also: Revivify, Mass Healing Word, Death Ward, Heroes' Feast.
4. Swords Bard (10 Swords Bard / 2 Paladin)
Why it's safe: Party face (all dialogue checks trivial). Ranged Slashing Flourish deals massive damage. Can escape with Invisibility. Has access to Counterspell via Magical Secrets.
| Level Split | Key Features |
|---|---|
| Bard 1-6 | Swords Bard at 3. Extra Attack at 6. Sharpshooter at 4. |
| Paladin 1-2 | Smite for melee nova option. Heavy armor. |
| Bard 7-10 | Magical Secrets (Counterspell, Hunger of Hadar / Command). |
Core gear: Band of the Mystic Scoundrel (bonus action Enchantment/Illusion after weapon attack). Helmet of Arcane Acuity. Titanstring Bow or Dead Shot.
Rotation: Slashing Flourish (Ranged) x2 → build Arcane Acuity → bonus action Command: Grovel / Hold Monster at DC 25+.
Essential Consumables & Preparation
Elixirs
| Elixir | Effect | When to Use |
|---|---|---|
| Hill Giant Strength | Str = 21 until long rest | All Strength builds. Buy from Auntie Ethel (3 per long rest/level up). Stockpile 20+ before she leaves Act 1. |
| Cloud Giant Strength | Str = 27 until long rest | Act 3 upgrade. Craft from Cloud Giant Fingernails. |
| Bloodlust | Extra Action on kill | Boss fights with adds. |
| Vigilance | +5 Initiative, cannot be Surprised | Any squishy caster who needs to go first. |
| Heroism | 10 temp HP + Blessed | Fights with high burst damage. |
| Necrotic Resistance | Resistance to Necrotic | Myrkul fight. |
| Fire Resistance | Resistance to Fire | Raphael fight. |
Scrolls
| Scroll | Quantity to Carry | Primary Use |
|---|---|---|
| Globe of Invulnerability | 3+ | Ansur, Raphael, Netherbrain |
| Chain Lightning | 5+ | AoE burst |
| Disintegrate | 3+ | Single-target delete |
| Misty Step | 10+ | Mobility on non-casters |
| Revivify | 5+ | Post-combat recovery |
| Counterspell | 3+ | Caster-heavy fights |
Golden Rules for Honour Mode Survival
1. Always Have an Escape Plan
One character — ideally a Rogue or anyone with Cunning Action Dash + Invisibility — should always be positioned to disengage. If a fight starts going south, that character runs, goes invisible, and returns to camp. Withers can resurrect the dead party for 200g each. A TPK is the only permanent loss condition.
Specific technique: Before any boss fight, cast Invisibility on one character and leave them outside the arena. If the fight wipes, that character revives everyone at camp.
2. Never Enter a Fight Without Full Resources
In Honour Mode, you cannot reload if you accidentally start a boss fight with half your spell slots. Rest after every significant encounter. Camp supplies are abundant — you can partial rest (no supplies) to restore half HP/spell slots.
3. Talk Your Way Past Fights
Baldur's Gate 3 rewards dialogue. Encounters you can skip entirely:
- Malus Thorm: Persuade nurses to kill each other → persuade Malus to let them "practice" (Deception DC 21)
- Gerringothe Thorm: Give her all your gold → she explodes from overload
- Thisobald Thorm: Drink with him → pass Constitution saves → he explodes
- Yurgir: Persuade him to kill his minions, displacer beast, and himself
- Ketheric Thorm (first fight): Persuade him to skip the rooftop fight entirely (DC 21 Deception)
4. The Alert Feat is Non-Negotiable
Alert (+5 to Initiative, cannot be Surprised) is the single best feat in Honour Mode. Every character benefits. Going first means you can delete 1-2 enemies before they act, or set up control spells. Surprise rounds against your party are run-enders.
Who takes Alert: Everyone who doesn't need Tavern Brawler or Sharpshooter for their build. At minimum: your Cleric and your Wizard/Sorcerer.
5. Buff Before Every Major Fight
Pre-buff routine:
- Longstrider (Ritual, no spell slot): +3m movement for the whole party, all day
- Aid (upcast at highest level, Level 5 = +20 max HP): Whole party
- Heroes' Feast (Level 11+): Immune to Poison, Frightened, Disease. +2d10 max HP. Whole party.
- Death Ward (Level 4): First time dropping to 0 HP, return to 1 HP instead. Cast on at least 2 characters.
- Elixirs: Apply relevant elixir to each character.
- Mage Armor (if applicable): Entire day, no concentration.
6. Boss-Specific Countermeasures
Before each boss, check their Legendary Action and prepare accordingly. Have resistance elixirs. Know what saves they target. If a boss has a Wisdom-save-based control, bring Calm Emotions or Protection from Evil and Good.
7. Respect the Githyanki
The Githyanki Patrol (Act 1, Mountain Pass bridge) and the Githyanki Inquisitor (Creche) are disproportionately dangerous. The patrol has 4 Githyanki warriors, each with Extra Attack, Misty Step, and Action Surge, at a point where your party likely only has one attack each. If you must fight: kill the ranged Gish first, use control spells (Hold Person is Githyanki's bane since they're humanoids), and focus-fire one target at a time.
8. Never Skimp on Consumables
In a normal playthrough, you might hoard potions and scrolls for "later." In Honour Mode, use them. Every boss fight deserves your best consumables. You'll never get to use them if you die.
