Here is the full list of all 10 Combo Card Clashers achievements.
You beat your first boss! Congrats!
You saved over 1300 gold.
You had a combo longer than 12.
You defeated more than 500 enemies.
You healed over 3000 health on a playthrough.
You finished the game with the story.
You invested more than 20 points into the Skill Tree.
You visited more than 50 events.
You bought more than 100 pieces of gear
You upgraded over 100 cards