Here is the full list of all 25 The Enchanted Cave 2 achievements.
Complete the Labyrinth Challenge
Complete the Monster's Lair Challenge
Save three people
Complete a New Game +
Completely fill all sections of the museum
Complete the magic section of the skill tree
Save two people
Transmute an item
Save one person
Equip an artifact in every equipment slot
Defeat the final boss
Completely fill one equipment section of the museum
Complete the crafting section of the skill tree
Defeat the sorcerer
Reach character level 25
Craft 75 total potions
Defeat the Yeti
Craft 15 total potions
Complete the combat section of the skill tree
Discover 10 secret areas
Successfully escape the cave with an artifact
Completely clear one floor of all enemies and loot
Complete Green Goo's Quest
Complete the main game in a single run