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