Here is the full list of all 28 Devils & Demons achievements.
Defeat 10 dragons
Win 100 random encounters
Heal civilians for 10,000 Hp
Find 1000 hidden objects.
Kill 6 enemies with a single attack
Fight with the same hero in 100 skirmishes.
Win 50 Random Encounters
Unlock 8 hero characters
Complete “At cold Death's door”.
Defeat 75 wolves
Revive a single character 5 times in a battle
Complete "The Depths of Karlahan"
Loot 100,000 Gold
Complete "When Playing with Fire"
Kill 50 demons
Kill 150 cultists
Heal for a total of 10,000 HP with spells
Complete 10 World Events
Defeat 100 undead
Inflict at least 4 different status effects on a single enemy.
Complete „A Place of no Hope“
Survive the attack on the Order Fortress
Reach level 30 with 8 characters
Use 1.000 potions
Complete 50 events or encounters with snow.
Save 100 villagers in Worldevents
Stun 100 opponents
Reach level 30 with a single character