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