Here is the full list of all 15 Mushroom Wars achievements.
Achieve victory on all Skirmish maps on highest difficulty
Earn all rewards in all Campaign levels
Complete Campaign on highest difficulty
Achieve maximum attack level
Earn all 9 rewards in a single Campaign level
Achieve level 5 morale
Upgrade your village to level 5
Earn each reward at least once
Capture an enemy building without having any of your own
Complete Campaign in under 60 minutes.
Win a Skirmish game
Complete Campaign
Capture 300 enemy buildings
Encounter aliens in Campaign
Encounter forest warriors in Campaign