Here is the full list of all 20 Invincible Cleopatra: Caesar's Dreams achievements.
Find out the secret ending for level 2
Collect the treasure from the ship’s hold
Collect the treasure from the top of the pyramid
Get Charm level 5
Open the secret room in the temple on the first try
Find 10 hidden objects
Repair 10 bridges
Get 5 achievements
Use any ability 10 times
Beat the developer's record 5 times
Complete the level in difficult mode in Gold time
Complete 20 levels in difficult mode in Gold time
Complete 15 levels at 3 stars each
Complete 30 levels at 3 stars each
Complete 35 levels at 3 stars each
Solve the wise man's riddle with no mistakes
Defeat Hapi in difficult mode in Gold time
Defeat Anubis in difficult mode in Gold time
Solve the Sphinx’s riddle for 3 stars
Complete the level without letting Caesar teleport