Here is the full list of all 308 Halls of Torment achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
[Norseman] Reach Agony III on the Frozen Depths.
[Shield Maiden] Wait for 180 seconds before you start moving. You must move in order to complete the quest.
Deal 5 000 000 damage with Morning Star.
Deal a 25 000 Damage or better hit on a single enemy with Radiant Aura without Fragile effect.
Deal 10 000 000 damage with your main ability.
Kill 40 000 Imps.
Deal 5 000 000 direct damage with abilities.
Deal 2 000 000 damage with Morning Star.
Reach level 50.
Deal 1 000 000 damage with Morning Star.
Collect a total of 200 000 gold.
Survive the Chambers of Dissonance in Agony mode until the lord appears.
Deal 3 500 000 damage with Grenades.
Reach level 80.
Deal 1 500 000 damage with Grenades.
Kill 50 000 Scorched.
Reach Agony III in Chambers of Dissonance
Deal 10 000 000 projectile damage in one run.
Deal 10 000 damage with a single hit.
Reach level 40.
Deal 4 000 000 projectile damage in one run.
[Warlock] Reach Agony III on the Ember Grounds.
[Shield Maiden] Deal 3 000 000 damage with the shield bash.
[Shield Maiden] Reach Agony III on the Forgotten Viaduct.
[Shield Maiden] Crit enemies 2 000 enemies with your main attack in one run. Shield Bash doesn't count.
Deal 3 000 000 damage with Frost Avalanche.
Have Frost Avalanche fire/place projectiles or obstacles 10 000 times per minute.
[Sorceress] Reach Agony III on the Forgotten Viaduct.
Reach an average of 10 critical hits per second with the main attack of the Sorceress.
[Archer] Reach Agony III on the Haunted Caverns.
Deal 1 000 000 projectile damage in one run.
Defeat the Lord of Discord.
Survive the Chambers of Dissonance until there are only 4 minutes left.
Defeat the Twisted Knight.
Kill 6 000 enemies in one visit of the Chambers of Dissonance.
Defeat the Village.
Survive the Chambers of Dissonance until there are only 12 minutes left.
Defeat the Void Caller.
Survive the Chambers of Dissonance until there are only 20 minutes left.
[Shield Maiden] Deal 1 500 000 damage with the shield bash.
Survive 28 minutes with your original max health. (Don't use items, blessings or traits)
[Warlock] Kill 5 000 Hellhounds in one exploration.
[Warlock] Survive 28 minutes without using your main weapon.
Survive 20 minutes without regenerating any health. Recovery from Potions or effects is allowed.
[Warlock] Survive 5 minutes with a maxmimum health of 250 or less.
Kill 50 000 Gargoyles
[Exterminator] Apply burn to 200 000 enemies.
Kill a total of 100 bosses.
[Sorceress] Block 90 attacks in one run.
Crit enemies 500 000 times.
[Swordsman] Reach Agony III on the Haunted Caverns.
Kill a total of 150 elite enemies.
Deal 3 000 000 damage with Ring Blades.
[Cleric] Reach Agony III on the Haunted Caverns.
[Cleric] Deal 500 000 burn damage in one run.
Deal 2 000 000 damage with Dragon's Breath.
Deal 2 000 000 damage with Flame Strike.
[Exterminator] Reach Agony III on the Ember Grounds.
[Exterminator] Kill 50 000 enemies.
Deal 3 000 000 damage with the Golem.
[Swordsman] Kill a total of 10 bosses.
[Swordsman] Deal 3 000 000 damage in one run.
[Swordsman] Get hit a total of 500 times over all attempts.
[Archer] Crit enemies 50 000 times within one run.
[Frozen Depths] Defeat the Lord of Hate.
Deal 3 000 000 damage with Arcane Splinter.
[Archer] Wait for 180 seconds before you start moving. You must move in order to complete the quest.
Deal 1 500 000 damage with Spirit Warrior.
Deal 3 000 000 damage with Hailstorm.
Deal 1 500 000 damage with Hailstorm.
Deal 750 000 damage with Hailstorm.
Level Up 2 000 times.
Deal 3 000 000 damage with Lightning Strike.
[Sorceress] Apply 20 stacks of electrify on a single enemy.
Apply electrify 100 000 times.
Kill 50 000 Wraiths
[Sorceress] Increase your movement speed to 11m/s.
[Sorceress] Deal 500 000 electrify damage in one run.
Kill 400 000 enemies in total.
Kill 10 000 Ghouls.
Kill 50 000 enemies with effects.
[Beast Huntress] Deal 5 000 000 ice damage in one run.
Apply damage effects 500 000 times.
Hit Enemies 40 000 times with Astronomer's Orbs.
Deal 3 000 000 damage with Astronomer's Orbs.
Play for 666 minutes.
[Warlock] Have 20 Summons at the same active. *attack projectiles do not count
[Warlock] Do not get hit for 5 minutes.
Kill a total of 10 lord.
Deal 3 000 000 damage with Kugelblitz.
[Shield Maiden] Acquire the trait [Parry V] in a run.
Deal 1 500 000 damage with Kugelblitz.
Consume a total of 100 potions.
[Shield Maiden] Survive 28 minutes without any defense buffs.
Deal 3 000 000 damage with Arcane Rift.
Deal 750 000 damage with Kugelblitz.
Deal 1 500 000 damage with Arcane Rift.
[Frozen Depths] Kill 7 500 enemies in one visit of the Frozen Depths.
Deal 750 000 damage with Arcane Rift.
Deal 3 000 000 damage with Transfixion.
Deal 1 500 000 damage with the Golem.
[Warlock] Deal 5 000 000 summon damage in one run.
[Warlock] Reach level 60.
[Warlock] Acquire the trait [Channeling V] in a run.
[Warlock] Deal 2 000 000 summon damage in one run.
[Warlock] Reach level 30.
[Cleric] Apply 50 000 debuffs in total.
Deal 1 000 000 damage with Flame Strike.
Deal 1 500 000 damage with Frost Avalanche.
[Cleric] Reach level 60.
[Cleric] Acquire the trait [Metabolism V] in a run.
Apply debuffs 50 000 times.
Kill 15 000 enemies in one visit of the Ember Grounds.
[Exterminator] Apply burn to 50 000 enemies.
Deal 1 000 000 damage with Dragon's Breath.
Deal 500 000 damage with Dragon's Breath.
[Shield Maiden] Defeat a Lord.
[Shield Maiden] Get hit 500 times in a single run.
Deal 750 000 damage with Spirit Warrior.
Kill 40 000 Hellhounds.
Deal 3 000 000 damage with Meteor Strike.
Deal 1 500 000 damage with Meteor Strike.
[Shield Maiden] Reach level 60.
Deal 750 000 damage with Meteor Strike.
[Shield Maiden] Deal 300 000 damage with the shield bash.
Reach level 30.
Kill 40 000 Slimes.
Deal 1 500 000 damage with Arcane Splinter.
Deal 750 000 damage with the Golem.
Purchase 10 items from the wellkeeper.
[Sorceress] Deal 5 000 000 lightning damage in one run.
Deal 1 500 000 damage with Lightning Strike.
[Sorceress] Reach level 60.
[Sorceress] Apply burn to 1 000 enemies in a single run.
Recover 100 000 HP in total
[Sorceress] Hit 1 000 Enemies for 500 or more damage in one run. (Main Attack)
[Sorceress] Reach level 30.
[Sorceress] Deal 2 000 000 lightning damage in one run.
[Sorceress] Deal 500 000 lightning damage in one run.
[Norseman] Reach level 60.
[Norseman] Deal 5 000 000 physical damage in one run.
[Norseman] Deal 2 000 000 phyiscal damage in one run.
[Norseman] Reach level 30.
[Norseman] Deal 500 000 physical damage in one run.
[Norseman] Hit 30 Enemies with a single Frost Nova.
[Warlock] Deal 500 000 summon damage in one run.
Deal 3 000 000 damage with Radiant Aura.
[Beast Huntress] Reach level 60.
Deal 1 500 000 damage with Ring Blades.
[Beast Huntress] Deal 2 000 000 ice damage in one run.
Deal 100 000 000 damage in total.
[Beast Huntress] Have your Dog deal 1 000 000 damage.
Deal 750 000 damage with Ring Blades.
[Beast Huntress] Deal 1 000 000 frost damage in one run.
[Beast Huntress] Reach level 30.
Kill a total of 50 elite enemies.
[Beast Huntress] Deal 500 000 ice damage in one run.
Play for 333 minutes.
Kill 25 000 enemies in one run.
[Exterminator] Deal 3 000 000 fire damage in one run.
[Exterminator] Reach level 60.
[Exterminator] Apply burn to 10 000 enemies.
[Exterminator] Destroy 200 Objects.
Kill 40 000 Skeletons.
Apply damage effects 50 000 times.
[Exterminator] Deal 200 000 burn damage in one run.
[Exterminator] Deal 1 000 000 fire damage in one run.
[Exterminator] Walk 8 000 meters in one run.
[Exterminator] Reach level 30.
[Exterminator] Deal 300 000 fire damage in one run.
Purchase an item from the Wellkeeper.
Deal 3 000 000 damage with Phantom Needles.
[Frozen Depths] Defeat the Elder Giant.
[Frozen Depths] Survive the Frozen Depths until there are only 2 minutes left.
[Archer] Walk 100 000 meters.
[Frozen Depths] Defeat the Twisted Construct.
[Frozen Depths] Survive the Frozen Depths until there are only 10 minutes left.
[Frozen Depths] Kill 3 000 enemies in one visit of the Frozen Depths.
[Frozen Depths] Defeat the Basilisk.
[Frozen Depths] Survive the Frozen Depths until there are only 18 minutes left.
Enter the Halls of Torment 20 times and survive at least 5 minutes.
[Frozen Depths] Kill 500 enemies in one visit of the Frozen Depths.
Enter Forgotten Viaduct and rescue the Cupbearer.
Defeat the Lord of Despair.
Kill 100 000 enemies in total.
Deal 1 500 000 damage with Astronomer's Orbs.
Kill 10 000 enemies in one visit of the Forgotten Viaduct.
Survive the Forgotten Viaduct until there are only 2 minutes left.
Deal 1 500 000 damage with Phantom Needles.
Deal 1 500 000 damage with Transfixion.
Deal 500 000 damage with Flame Strike.
Defeat the Hydra.
[Archer] Reach level 60.
Deal 750 000 damage with Phantom Needles.
Kill 5 000 enemies in one visit of the Forgotten Viaduct.
Survive the Forgotten Viaduct until there are only 10 minutes left.
Get Phantom Needles to Level 3 to be able to select Ability Upgrades.
Defeat the Frost Knight.
Level Up 500 times.
[Shield Maiden] Hit 15 Enemies with a single attack. Can't be done with the shield bash.
Kill 1 000 enemies in one visit of the Forgotten Viaduct.
Survive the Forgotten Viaduct until there are only 18 minutes left.
Defeat the Wraith Horseman.
[Archer] Enter the Halls of Torment 5 times.
Collect a total of 20 000 gold.
Defeat the Lord of Regret.
Deal 1 500 000 damage with Radiant Aura.
[Swordsman] Reach level 60.
Survive the Ember Grounds until there are only 2 minutes left.
Defeat the Wyrm Queen.
Deal 750 000 damage with Frost Avalanche.
[Swordsman] Regenerate 2 000 HP in one run
[Swordsman] Hit 1 000 Enemies for 300 or more damage in one run. (Main Weapon)
Deal 750 000 damage with Radiant Aura.
Retrieve 1 item from the Halls of Torment.
Kill 5 000 enemies in one visit of the Ember Grounds.
Survive the Ember Grounds until there are only 12 minutes left.
[Swordsman] Acquire the trait [Strength IV] in a run.
[Swordsman] Deal 1 000 000 damage with the main weapon.
[Swordsman] Reach level 30.
[Swordsman] Walk 5 000 meters in one run.
Survive the Ember Grounds until there are only 22 minutes left.
Defeat the Flamedancer.
[Exterminator] Apply 50 or more burn effects at the same time.
Kill 1 000 enemies in one visit of the Ember Grounds.
[Swordsman] Deal 200 000 damage with the main weapon.
[Swordsman] Hit 20 Enemies with a single attack.
Rescue the Wellkeeper.
Defeat the Lord of Pain.
Kill a total of 1 lord.
Deal 750 000 damage with Arcane Splinter.
Crit enemies 50 000 times.
Deal 750 000 damage with Astronomer's Orbs.
[Cleric] Deal 5 000 000 magic damage in one run.
[Cleric] Apply 10 stacks of Fragile on a single enemy at once.
[Cleric] Regenerate 1 500 HP in one run. Only passive regeneration is counted.
[Cleric] Reach level 30.
[Cleric] Deal 1 500 000 magic damage in one run.
[Cleric] Deal 500 000 magic damage in one run.
Enter the Halls of Torment 5 times and survive at least 5 minutes.
Deal 750 000 damage with Lightning Strike.
Survive until there are only 10 minutes left.
[Archer] Kill 20 000 enemies in one run.
Deal 750 000 damage with Transfixion.
[Archer] Crit enemies 20 000 times within one run.
Kill 15 000 enemies in one run.
Get Astronomer's Orbs to Level 3 to be able to select Ability Upgrades.
Defeat the Lich.
Kill a total of 10 bosses.
Deal 10 000 000 damage in total.
Get Arcane Splinter to Level 3 to be able to select Ability Upgrades.
Consume a total of 10 potions.
[Archer] Acquire the trait [Quick Hands IV] in a run.
[Archer] Do not get hit for 3 minutes.
[Archer] Crit enemies 5 000 times within one run.
Survive until there are only 14 minutes left.
[Archer] Increase your movement speed to 8m/s.
Defeat the Skeleton Lord.
Kill 5 000 enemies in one run.
[Archer] Reach level 30.
Get Lightning Strike to Level 3 to be able to select Ability Upgrades.
Collect a total of 300 gold.
Defeat the Imp Chieftain.
Survive until there are only 26 minutes left.
Enter the Halls of Torment.
[Warlock] Take a total of 15 000 damage over all runs.
Apply debuffs 500 000 times.
Purchase 40 items from the wellkeeper.
Kill 10 000 Beasts.
Kill 10 000 creatures made of ice.
[Norseman] Kill 5 000 enemies with the Frost effect in a single run.
[Norseman] Hit Enemies 20 000 times with the axes. Must be done within one run.
Deal 3 000 000 damage with Spirit Warrior.
[Beast Huntress] Reach Agony III on the Frozen Depths.
Deal 10 000 double crits or better with the Phantom Needles.
Apply 100 000 slow stacks in a single run.
Apply 150 000 effect stacks with Transfixion.
[Norseman] Collect 10 Power Ups in one run.
Have 300 Arcane Splinter active at the same time.
One hit kill 1 000 enemies that have 1 000 or more Health with a direct hit from Lightning Strike within one run.
Trigger 10 000 times direct Burn damage with Dragon's Breath. This is done by applying burn on enemies with 20 burn stacks.
Deal 160 Crits with a single Meteor. Overcrits are getting counted.
Have all Ring Blades projectiles travel a distance of 804 672 meters within a single run.
Haave the Golem roll for a total duration of 20 minutes in a run.
Kill 12 000 enemies in one visit of the Chambers of Dissonance.
Kill 17 000 enemies in one visit of the Chambers of Dissonance.
Deal 2 000 000 damage with items.
Deal 5 000 000 damage with items.
Deal 15 000 000 direct damage with abilities.
Deal 50 000 000 direct damage with abilities.
Reach level 100.
Reach Agony IV in Chambers of Dissonance
Deal 100 000 000 damage with your main ability.
Deal 2 000 000 damage with Spectral Fists.
Deal 5 000 000 damage with Spectral Fists.
Deal 10 000 000 damage with Spectral Fists.
Hit 500 enemies for 25 000 damage or more. Overkill damage counts.
Apply Frost 80 000 times with Hailstorm
Hit 40 enemies with a Morning Star for 100 times.
Deal 20 000 000 the dash or dash explosion of Spirit Warriors in one run.
Deal 100 000 damage with a single hit.
Kill 5 000 enemies at full life with a single hit of Arcane Rift.
Deal 1 000 times damage by applying the 20th+ electrify stack through Kugelblitz.
Kill 10 000 Carpas.
Kill 10 000 Constructs.
Kill 10 000 Homunculi.
[Norseman] Deal 10 000 000 frost damage in one run.