Here is the full list of all 83 HELLCARD achievements.
Win a run without losing any HP.
Have all of your cards in hand cost at least 3 mana (at least 5 cards).
Have only legendary cards in your deck.
Start a battle with 1 HP and exit it with full health.
At any point, have at least 35 cards in your deck.
Win a run without adding or removing any cards to your deck.
Win a run without getting any gemstones.
Win a run without getting any block.
Replay 5 cards using Stamina Burst in a single turn.
Unlock all cards and artifacts for 3 classes.
Reach 50 max HP.
Win a run without companions.
Reach floor 25 in Endless Mode
Reach floor 19 in Endless Mode
Reach floor 13 in Endless Mode
Defeat Cook
Wear 15 different outfits in battles.
Build deck consisting only of Influence cards.
Win 15 runs
In a single adventure screen upgrade a Starter Card to a Legendary.
Wear 10 different outfits in battles.
Wear 5 different outfits in battles.
Unlock all cards and artifacts for 2 classes.
Win a run with Torment 10.
Unlock all cards and artifacts for 1 class.
Win a run under 30 minutes
Win a run under 45 minutes
Win a run under 60 minutes
Win a run with the Pacifist Torment modifier without killing any monster.
Win a run without taking any artifacts.
Win a match when all other players had fallen.
Die alongside with all the monsters.
Win a match dead.
Win a run taking all rightside paths on the map.
Win a battle with Antipope without ever reaching card limit.
Win a battle having 2 or less cards in deck.
Build deck consisting only of Skill cards.
Die due to rotten damage.
Have all of your cards in hand cost 0 mana (at least 5 cards).
Start a battle with 1HP and survive.
Gamble away the last gem.
Build deck consisting only of Attack cards.
During a battle have more status cards in your deck than all other types combined.
Die to an archer while playing a Warrior
Have a monster frozen and stunned at the same time.
Have 32k block.
Have 1k block.
Have 128 block.
Have a team member play at least 15 cards during one turn and deal no damage.
Take no damage in a turn in which 3 heroes are supposed to die.
Win 5 runs
Play a Starter card using a Stamina Burst.
Kill an enemy while having at least 10 Weak influence stacked.
Win run with Torment 1.
Defeat Archdemon
Defeat all minibosses
Win a run
Defeat Antipope
Deal 200 damage in one turn as a team.
Win a battle in the first turn
Deal 100 damage in one turn as a team.
Deal 50 damage in one turn as a team.
Win final boss fight during first turn.
Have 2 team members play at least 15 cards each during one turn and deal no damage.
Have 3 team members play at least 15 cards each during one turn and deal no damage.
Win a run with every player having 1HP at the end.
Win a run with Torment 20.