Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Bird Food	Kill the Rock Worm.
Bird Food (Hard)	Kill the Rock Worm on Hard.
Conclusion	Beat the Game with All Rune Orbs.
Conclusion (Hard)	Beat the Game with All Rune Orbs on Hard.
Darkness Beckons	Complete the Forest.
Darkness Beckons (Hard)	Beat the Forest on Hard.
Dragon Slayer	Kill the Baby Dragon.
Dragon Slayer (Hard)	Kill the Baby Dragon on Hard.
Ending? (Hard)	Beat the Rift on Hard.
Forbidden Magic	Kill the Necromancer.
Forbidden Magic (Hard)	Kill the Necromancer on Hard.
Fresh Air	Complete the Caves.
Fresh Air (Hard)	Beat the Caves on Hard.
Fungicide	Kill the Mushroom Golem.
Fungicide (Hard)	Kill the Mushroom Golem on Hard.
Iced	Kill the Evil Mage.
Iced (Hard)	Kill the Evil Mage.
Infernal Engine	Kill the Rust Fiend.
Infernal Engine (Hard)	Kill the Rust Fiend on Hard.
Into the Breach	Complete the Catacombs.
Into the Breach (Hard)	Beat the Catacombs on Hard.
Locked for a Reason	Kill the Tower Serpent.
Locked for a Reason (Hard)	Kill the Tower Serpent on Hard.
Myth Slayer	Kill the Chimera.
Myth Slayer (Hard)	Kill the Chimera on Hard.
No Masters!	Kill the Goblin King.
No Masters! (Hard)	Kill the Goblin King on Hard.
Nothing to Brood About	Kill the Brood Demon.
Nothing to Brood About (Hard)	Kill the Brood Demon on Hard.
Oh the Horror!	Kill the Abomination.
Oh the Horror! (Hard)	Kill the Abomination on Hard.
Slayer of Giants	Kill the Behemoth.
Slayer of Giants (Hard)	Kill the Behemoth on Hard.
Stay in your Grave!	Kill the Zombie Dragon.
Stay in your Grave! (Hard)	Kill the Zombie Dragon on Hard.
The Cycle Contines (Hard)	Beat the Game without All Rune Orbs on Hard.
The Cycle Continues	Beat the Game without All Rune Orbs.
The Dark Side	Kill the Shadow Knight.
The Dark Side (Hard)	Kill the Shadow Knight on Hard.
The End?	Complete the Rifts.
Weed Whacker	Kill the Vine Lord.
Weed Whacker (Hard)	Kill the Vine Lord on Hard.
Will-No-Wisp	Kill the Wisp Queen.
Will-No-Wisp (Hard)	Kill the Wisp Queen on Hard.