| Achievement | How to unlock
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| A Towering Achievement | Complete every optional defense level on any difficulty.
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| Architecture Degree | Acquire all Citadel upgrades from the Book of Insight.
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| Berserker | Complete all skirmish levels on Extreme difficulty.
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| Brickie | Place 150 stone pieces.
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| Bug Squasher | Kill 100 horrors during campaign.
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| Butcher, Baker, Candlestick Maker... | Complete a city-building level with at least one building of each type.
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| Creator | Create and save a level in Sandbox Mode.
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| Crush Hour | Kill 50 horrors under collapsing pieces.
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| ECHO, Echo, echo.... | Summon 15 echoes during a level.
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| Fate Is A Dark Comedy | Complete 'the Defense of Hogar' on any difficulty.
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| Feathered Friend | Pet Hermes 10 times.
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| Fight Swarm With Swarm | Have 75 units at your command during a city-building level.
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| Following A Lost Trail... | Complete 'Lost Pages' on any difficulty.
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| Foreman | Place 1000 stone pieces.
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| Goddess | Complete all campaign levels on Extreme difficulty.
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| Home Is Calling | Complete the opening level on any difficulty.
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| Horror Of Horrors | Complete 'Downpour' on any difficulty.
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| I Can See My Shack From Up Here! | Deploy a unit 25m from the ground.
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| La La La Can't Hear You | Kill 5 Sirenas during campaign.
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| Legend | Complete all campaign levels on Hard difficulty.
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| Lost And Found | Discover all lost pages from Aura's expedition
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| Lost Words | Discover a lost page from an ill-fated expedition
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| Master Architect | Place 5000 stone pieces.
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| Metropolis | Reach maximum Prosperity in a city-building level.
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| Party Of Misfits | Create a squad of Hogardian units with at least one unit of each type.
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| Professional Exterminator | Kill 10000 horrors during campaign.
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| Rat Catcher | Kill 1000 horrors during campaign.
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| Rectora | Earn the highest Expedition rank during campaign.
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| Reunited | Complete 'Into the Depths' on any difficulty.
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| Revivalist | Witness Iris return to the Citadel from the brink of death.
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| Self Improvement | Acquire all skills for Iris from the Book of Insight.
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| Skim Reading | Acquire one skill for Iris and one upgrade for the Citadel using the Book of Insight.
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| Skirmisher | Complete all skirmish levels on any difficulty.
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| Speed Builder | Complete the campaign in less than eight hours on any difficulty.
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| Tell Stories Of This Day | Complete the final level on any difficulty.
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| The Order A-Fails | Lose any level during campaign.
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| The Order A-Wails | Lose a soldier to a fall into the Depths.
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| The Rectora's Secret | Complete 'Memorial' on any difficulty.
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| Tower Defender | Complete an optional defense level on any difficulty.
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| Untouchable | Complete a city-building level on Hard without losing any units.
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| We Will Rebuild | Complete 'the Forest Garrison' on any difficulty.
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| Where There's A Will... | Find a familiar backpack...
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| Wood You Kindly | Complete an optional defense level on Medium or higher without using Stone pieces.
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| You Can Pause, Y'Know | Complete a city-building level without pausing.
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