Game modes

The world has been covered by a strange Mist. Dense patches of it are not passable.

Both units and buildings will recover health outside combat.

Book of Insight

The Book of Insight is accessible between campaign missions. In it you can spend Insight to gain new abilities, unlock new pieces and improve the Citadel. Purchased skills can be refunded at any point.

Citadel skills improve the citadel.

Skill	Effect	Type	Expedition Level
Perla Escape	Iris automatically teleports to the Citadel when her health is low	Passive	I
Headquarters Defense	Generates a field of damage that hurts all Horrors near the Citadel	Active	I
Reinforced Stonework	Citadel gains +250 health	Passive	II
Mistleap	Teleports all units in the arte's field to the Citadel	Active	III

Units skills improve the attacks of one the units.

Skill	Effect	Expedition Level
Bowman: Menelaus Shot	Bowman attacks 3 horrors at once.	I
Lobber: Powder Ball	Lobber attacks hit a larger area	I
Captor: Pearl Web	Captor attacks stun horrors	II
Cannoneer: Volatile Cannonball	Cannoneer attacks hit a larger area	II
Ballista: Cluster Bomb	Ballista attacks hit a larger area	III
Hunter: Execution	Hunter attacks instantly kill low-health enemies	III

Pieces skills unlock new pieces.

Skill	Effect	Expedition Level
Advanced Stone Pieces	Unlocks Stone Rampart, Stone Arches and 1x3 Stone Brick pieces

Prosperity

Each settlement has a level of Prosperity, which starts at 1. Once sufficient buildings and pieces have been constructed the Prosperity level can be increased.

Prosperity level II requires a Barracks and 50 points. Upgrading costs 360 Oxygen, 195 Wood and 45 Stone.

Prosperity level III requires a Masonry Guild and 250 points. Upgrading costs 540 Oxygen, 285 Wood, 120 Stone and 35 Minerals.

Prosperity level IV requires a Bomber's Workshop and 400 points. Upgrading costs 990 Oxygen, 420 Wood, 285 Stone and 70 Minerals.