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