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