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