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