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