Improvements

Upgrades are purchased from various buildings to give permanent bonuses for the current mission.

Upgrade	Effects	Cost	Time	Building	Prosperity Level
Basic Dormitory	+5 Military Capacity	180 Oxygen 25 Wood 5 Minerals	42 Seconds	Citadel	I
Leather Bow Grip	+4 Bowman Damage	180 Oxygen 25 Wood 5 Minerals	24 Seconds	Barracks	I
Leather Gauntlets	Increased Lobber Health	180 Oxygen 25 Wood 5 Minerals	24 Seconds	Barracks	I
Intense Training	+3 Range and Line of Sight for all Barracks units	180 Oxygen 25 Wood 10 Minerals	24 Seconds	Barracks	I
Advanced Bunkhouse	+5 Military Capacity	360 Oxygen 45 Wood 20 Minerals 120 Stone	42 Seconds	Citadel	II
Weighted Net	+ 2 Horrors hit by Captor attacks	360 Oxygen 45 Wood 20 Minerals	42 Seconds	Barracks	II
Improved Masonry	Increases the Toughness granted to higher walls	540 Oxygen 30 Minerals 150 Stone	33 Seconds	Masonry Guild	II