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