Here is the full list of all 34 Healer's Quest achievements.
Complete the inventory
Unlock all secret spells
Complete the team challenge
Upgrade all rings
Save Beauty
Save Murky
Save Grumpy
Save Tanky
Defeat Don Chitor and get your loot back
Complete every character's challenge
Beat the Evil King Simon
Troll the Trolls
Beat the Diabolic Lovers of Ancestral Castle
Unlock a secret upgrade
Beat Kronaxx, the necromancer
Unlock a secret Spell
Complete a daily Quest in the Crypt
Meet Uncle Troll
Customize your own crypt
Put Magical Forest on fire
Upgrade a spell to level 7
Defeat the priest and his abomination
Escape from the prison
Upgrade a ring
Unlock all spells
Beat the Boss-In-A-Box in Tribal Cave
Beat the Royal Instructor
Discover what's inside the chest near Tutorial Town
Try to talk to wolves
Get racketted by your teammates
Kill the dragon in Classical Dungeon
Rescue a girl in distress
Pass a night outside
Make one of your allies sulk