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