Here is the full list of all 83 HELLCARD achievements.
In a single adventure screen upgrade a Starter Card to a Legendary.
Win a battle having 2 or less cards in deck.
Reach floor 25 in Endless Mode
Reach 50 max HP.
Reach floor 19 in Endless Mode
Have only legendary cards in your deck.
Reach floor 13 in Endless Mode
Win a run without losing any HP.
Win a run without adding or removing any cards to your deck.
Win final boss fight during first turn.
Win a run without getting any block.
Win a run without getting any gemstones.
Defeat Cook
Replay 5 cards using Stamina Burst in a single turn.
Win a run without taking any artifacts.
Wear 15 different outfits in battles.
Win a match when all other players had fallen.
Build deck consisting only of Attack cards.
Win a run without companions.
Win 15 runs
Win a run with the Pacifist Torment modifier without killing any monster.
Build deck consisting only of Skill cards.
Die to an archer while playing a Warrior
Die due to rotten damage.
Wear 10 different outfits in battles.
Play a Starter card using a Stamina Burst.
Win a run under 30 minutes
Win a run with Torment 10.
Win a run under 45 minutes
Unlock all cards and artifacts for 3 classes.
Win a run taking all rightside paths on the map.
Start a battle with 1HP and survive.
During a battle have more status cards in your deck than all other types combined.
Win run with Torment 1.
Win a battle with Antipope without ever reaching card limit.
Gamble away the last gem.
Unlock all cards and artifacts for 2 classes.
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.
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.
Have a monster frozen and stunned at the same time.
Die alongside with all the monsters.
Win a match dead.
Wear 5 different outfits in battles.
Have 32k block.
Have 1k block.
Have 128 block.
Have all of your cards in hand cost 0 mana (at least 5 cards).
Unlock all cards and artifacts for 1 class.
Win 5 runs
Win a run under 60 minutes
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.
Have all of your cards in hand cost at least 3 mana (at least 5 cards).
Build deck consisting only of Influence cards.
Start a battle with 1 HP and exit it with full health.
Kill an enemy while having at least 10 Weak influence stacked.
Win a run with every player having 1HP at the end.
At any point, have at least 35 cards in your deck.
Win a run with Torment 20.