Here is the full list of all 29 Astria achievements.
Complete the 1st Floor inside the Cave of Astria.
Complete the 2nd Floor inside the Cave of Astria.
Complete the 3rd Floor inside the Cave of Astria.
Complete the 4th Floor inside the Cave of Astria.
Complete the 5tht Floor inside the Cave of Astria.
Complete the 6th Floor inside the Cave of Astria.
Complete the 7th Floor inside the Cave of Astria.
Complete the 8th Floor inside the Cave of Astria.
Complete the 9th Floor inside the Cave of Astria.
Complete the 10th Floor inside the Cave of Astria.
Complete the 11th Floor inside the Cave of Astria.
Complete the 12th Floor inside the Cave of Astria.
Seal the Cataclysm back where it belongs!
Save Gwen's planet from complete destruction!
Beat the developer time on 1st Floor.
Beat the developer time on 2nd Floor.
Beat the developer time on 3rd Floor.
Beat the developer time on 4th Floor.
Beat the developer time on 5th Floor.
Beat the developer time on 6th Floor.
Beat the developer time on 7th Floor.
Beat the developer time on 8th Floor.
Beat the developer time on 9th Floor.
Beat the developer time on 10th Floor.
Beat the developer time on 11th Floor.
Beat the developer time on 12th Floor.
Beat the Cataclysm whitout being hit by any attacks.
Beat the developer time on 13th Floor.
Recharge your Artefact of Astria with all available Power Sphere.