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