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