Here is the full list of all 61 Dungeons 4 achievements.
Use Brimstone to trigger 10 explosions in “Raiders of the Lost Stone”.
Complete “Doom Hill” on any Difficulty level.
Complete “Tanos' Crusade Against Thalya” using nothing but Undead Creatures.
Complete “The Finitude Drill” on any Difficulty level.
Sabotage the Drill in “The Finitude Drill” by destroying the three cooling pumps.
Complete “If Looks Could Kill” on any Difficulty level.
Complete “The Duel” on any Difficulty level.
Defeat all of the Good Beings on the Overworld in “The Duel”.
Complete “All’s Well That Ends Evil” on any Difficulty level.
Complete “Tanos' Crusade Against Thalya” on any Difficulty level.
Complete “The Cathedral of Light” on any Difficulty level.
Destroy all of the Cages and all of the Hero buildings in “The Cathedral of Light”.
Free the Naga in “The Cathedral of Light”.
Complete “… like son” on any Difficulty level.
Have Gorgu destroy 50 Heroes in “… like son”.
Complete “The Big Eaty” on any Difficulty level.
Expose no Unit to the Storm in “The Ascent.”
Complete “The Ascent” on any Difficulty level.
Earn a reward in “The Ascent” through hard work.
Complete “Heroes’ Gorge” on any Difficulty level.
Intercept all Shipments in “Heroes’ Gorge”.
Use the Magic Tower to kill 60 Heroes in “Heroes’ Gorge”.
Complete “Bad Elves Go Everywhere” on any Difficulty level.
Raise Thalya to 3 level or higher in “Bad Elves Go Everywhere”.
Defeat the Unicorn in “Bad Elves Go Everywhere” within 30 minutes.
Complete “The Plains of Strothalm” on any Difficulty level.
Own 60 Minions at the same time in “The Plains of Strothalm”.
Complete “The Hellwoods” on any Difficulty level.
Own an Arcanium with at least 100% Efficiency in “The Hellwoods”.
Complete “Hammer Time, Round Two” on any Difficulty level.
Have at least 10 Creatures in “Hammer Time, Round Two”.
Complete “The Last Stand” without letting Thalya die.
Complete “The Last Stand” on any Difficulty level.
Kill 10 Heroes in “The Last Stand” while Thalya's Fury is active.
Kill 10 Heroes with Traps in “Hammer Time, Round Two”.
Kill 20 Heroes with Spells in “The Hellwoods”.
Sacrifice 6 different things in “The Plains of Strothalm”.
Use Dynamite to destroy 10 Heroes in “The Ascent”.
Keep Gorgu from getting hurt in “The Big Eaty”.
Feed Gorgu more Heroes than necessary in “The Big Eaty”.
Complete “… so the Son” without researching Potions or Spells.
Create 5 Ghost Heroes in “Tanos' Crusade Against Thalya.”
Tanos cannot be allowed to collect more than 6000 Evilness in “All’s Well That Ends Evil”.
Torture at least 20 Heroes in “All’s Well That Ends Evil”.
Don't let Gorgu's Life Energy drop below 70% in “The Duel”.
Use the Mirror a maximum of 3 times in “If Looks Could Kill”.
Not one Room Tile may be destroyed by the Laser Eyes in “If Looks Could Kill”.
The Dungeonheart cannot be allowed to take any damage in “The Finitude Drill”.
Destroy 10 Lavalumps in “Doom Hill” using the Charmanor relic.
All Hero buildings must be destroyed at the end of “Doom Hill”.
Complete “Raiders of the Lost Stone” on any Difficulty level.
Not a single Mana Shipment may reach its destination in “Raiders of the Lost Stone”.
Complete “The Rune Sockets of Finitude (Part 1)” on any Difficulty level.
Advance all Faction Research to Level 10 in “The Rune Sockets of Finitude (Part 1)”
Train 5 Units to above Level 10 in “The Rune Sockets of Finitude (Part 1)”
Complete “The Rune Sockets of Finitude (Part 2)” on any Difficulty level.
Use the Healing Stone to heal 10000 Damage in “The Rune Sockets of Finitude (Part 2)”
No Stones can be allowed to take any Damage in “The Rune Sockets of Finitude (Part 2)”.
Complete “The Last Stand – This Time For Real!” on any Difficulty level.
Never call on Tristan for help in “The Last Stand – This Time For Real!”.
Destroy all Hero buildings in “The Last Stand – This Time For Real!”.