Here is the full list of all 17 Mushroom Wars 2 achievements.
Win in multiplayer having only one building
Use each hero in multiplayer
First multiplayer game victory!
Win 10 times in multiplayer
Capture 300 enemy buildings
Destroy 10.000 units by towers
Complete tutorial
I'll be back!
Complete Episode 1
Complete Episode 2
Collect 100 campaign stars
Get 200 campaign stars
Get ALL campaign stars
Have 1000 of your troopers on battlefield
Get 5 stars of morale in battle
Capture enemy building without having any of yours
Get maximum attack rating