Here is the full list of all 50 Epic Cards Battle(TCG) achievements.
Reach Level 35
Evolve a card
Win 250 battles in global match
Add a friend
Win 5 battles in hardcore mode
Reach Level 30
Possess 50 distinct cards
Reach Level 25
Craft a new card successfully
Watch a battle replay of your own
Win 100 battles in global match
Reach Level 20
Ranked in Ladder TOP 100 and get rewards
Win 5 battles in pro mode
Win a global match under condition "Time Out"
Achieved 100 stars in campaign
Reach Level 15
Join a guild
Win 20 battles in global match
Win a Ladder battle
Watch a live battle between other players
Win 5 battles in quick mode
Complete a daily mission
Win a battles in global match
Complete all lessons in academy
Enhance a card to level 10
Possess 20 distinct cards
Reach Level 10
Possess 10 distinct cards
Complete a Boss campaign quest
Reach Level 5
Complete a campaign quest in Hard difficulty
Buy any item in shop
Win a battle in campaign
Send a chat message
Complete all campaign quests in Hard difficulty
Win 500 battles in global match
Possess 100 distinct cards
Reach 5% of enhancing rate
Reach 15% of enhancing rate
Reach 30% of enhancing rate
Unlocks 50 arts in gallery
Reach Level 40
Reach Level 45
Reach Level 50
Reach Level 55
Reach Level 60
Reach Level 65
Reach Level 70
Win a global match under condition "Extinction"