Here is the full list of all 83 HELLCARD achievements.
Have 128 block.
Reach floor 25 in Endless Mode
At any point, have at least 35 cards in your deck.
Reach floor 19 in Endless Mode
Reach 50 max HP.
Die due to rotten damage.
Defeat Antipope
Reach floor 13 in Endless Mode
Defeat Cook
Win a battle in the first turn
Win a run
Defeat Archdemon
Unlock all cards and artifacts for 1 class.
Gamble away the last gem.
Have a monster frozen and stunned at the same time.
Defeat all minibosses
Deal 200 damage in one turn as a team.
Deal 100 damage in one turn as a team.
Deal 50 damage in one turn as a team.
Win 5 runs
Win 15 runs
Win a run under 60 minutes
Win a run under 45 minutes
Win a run under 30 minutes
Have 1k block.
Have 32k block.
Unlock all cards and artifacts for 2 classes.
Unlock all cards and artifacts for 3 classes.
Wear 5 different outfits in battles.
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).
Have all of your cards in hand cost 0 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.
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.
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.
Die alongside with all the monsters.
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.
Win a match when all other players had fallen.
Win a match dead.
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.