Here is the full list of all 38 Minion Masters achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Win 500 Ranked Battles
Use 100 Resource Tokens
Use 250 Power Tokens
Complete 100 Daily Quests
Play a friendly challenge with 3 different friends.
Play 5 spells in a row during a Ranked Match and then win
Craft a Legendary card
Complete 30 Achievements
Use 50 Resource Tokens
Reach the Silver League
Acquire a collection of 150 cards
Use 100 Power Tokens
Complete 50 Daily Quests
Win 100 Ranked Battles
Win a Ranked battle with 8 different Masters
Complete 25 Daily Quests
Use 20 Resource Tokens
Acquire a collection of 100 cards
Craft a Supreme card
Win 50 Ranked Battles
Win a Ranked Battle with less than 100 Health left
Complete 10 Daily Quests
Complete 15 Achievements
Win against 8 different Masters
Use 25 Power Tokens
Complete 3 Daily Quests
Craft a Rare card
Reach the Bronze League
Win 10 Ranked Battles
Create 3 decks
Craft a Common card
Reach the Stone League
Complete 5 Achievements
Acquire a collection of 50 cards
Win 3 Ranked Battles
Complete 10 solo challenges
Watch a replay
Complete 5 solo challenges