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