Here is the full list of all 22 Aurora Dusk Demo achievements.
Meet Kalzehire
Meet Bear Claw
Meet Kerringer
Meet Xcillia
Meet Gwidion
Save the city of Aurora
Win a custom game
Win a skirmish game
Defeat a minotaur
Kill 1000 zombis
Reach level 10
Reach level 100
Meet Devourer
Equip a "solaris diadem"
Meet a protector
Equip a rifle
Control at least 50 units
Meet a protectress
Activate 'auto' mode
Meet Marshwald
Meet Roxanne
Meet Shadowgate