Here is the full list of all 30 Loot Grind Simulator achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Complete all collections
Unlock all achievements
Equip unique items in all slots
Reach max level
Equip a unique item
Complete 1000 quests
Collect all weapons
Craft 100 items
Reach level 800
Reach level 600
Complete 750 quests
Craft 75 items
Reach level 400
Craft 50 items
Craft an item
Craft 10 items
Craft 25 items
Complete a collection
Level up for the first time
Reach level 10
Reach level 50
Reach level 100
Reach level 200
Complete a quest
Complete 10 quests
Complete 50 quests
Complete 100 quests
Complete 250 quests
Complete 500 quests
Equip items in all slots