Here is the full list of all 20 Hopebringers achievements.
Start your adventure
Defeat 25 enemies
Defeat 50 enemies
Defeat 100 enemies
Complete Level 6
Complete Level 13
Complete Level 19
Purchase all upgrades from one character
Purchase all upgrades from four character
Purchase all upgrades from all character
Complete 3 random levels
Complete 6 random levels
Complete 12 random levels
Defeat an enemy while being in height advantage
Defeat an enemy while bein in height disadvantage
Deal no damage with an attack
Make the stump kill another enemy
Make the giant kill another enemy
Defeat an ally with your own characters
Complete all levels