Here is the full list of all 24 Dragon's Wake achievements.
End the game with no other dragons in your group
Destroy the black knight
Smash 10 pieces of masonry
Kill 50 undead enemies
Hatch the egg
Kill an enemy by dropping a stone on them
Bite a ghost skeleton out of the air
Defeat the goblin chief
Eat 20 Goblins
Kill 50 enemies with fire
Retrieve the green dragon egg
Eat a creature before it hits the ground
Eat food while at full health
Grow larger
Eat food off the ground
Give the kid a ride
Make a friend
Find your mother
Save a friend
Give up your ability to breathe fire
Reach the surface with the green dragon
Stay in the air for 10 seconds
Kill a mouse with a direct hit from a fireball
Increase all abilities to maximum