Here is the full list of all 80 Astrea: Six-Sided Oracles achievements.
Reach max level with all Oracles.
Obtain all other achievements.
Reach max level with Sothis.
Reach max level with Orion.
Acquire 12 different type of Sentinels in a single run.
Have both your Sentinels with 4 types of Link.
Reach max level with Cellarius.
Play at least 20 virtues in a single turn.
Reach max level with Austra.
Score at least 7000 points in a run.
Play a die with at least 50 Confuse on an Enemy without any Confuse percentage modifier.
Have at least 20 Soul Heat.
Win a run with 10 or fewer dice on your dice pool.
Win a run without any Blessings.
Reach max level with Hevelius.
Defeat Astrea with all Oracles.
Defeat Astrea with Orion.
Reroll the same die at least 5 times in a single turn.
Defeat Corrupted Cellarius.
Activate Astrium 4 times in a single turn.
Defeat Astrea with Sothis.
Have at least 4 creatures with at least 15 affliction.
Defeat the Corrupted version of yourself.
Have at least 30 Chanting.
Reach max level with Moonie.
Defeat Astrea with Moonie.
Defeat Corrupted Austra.
Deal infinity Purify.
Defeat Astrea at Astrea Level 3.
Defeat Corrupted Hevelius.
Win a run at Anomaly Level 8.
Win a battle with at least 20 Plague Hex die in your dice pool.
Win a run with at least 50 dice on your dice pool.
Win a run with at least 15 Blessings.
Win a run without owning any Sentinels.
Defeat Astrea with Austra.
Defeat Corrupted Orion.
Defeat a boss on the first turn.
Make a creature receive at least 100 Purify in a single Purify instance.
Deal 50 Purify with a Safe die.
Dodge 4 Corruption in a row.
Win a run with two Sentinels on max level.
Win a run at Anomaly Level 3.
Defeat Astrea with Hevelius.
Defeat Corrupted Sothis.
Repair or Reactivate Sentinels at least 20 times in a single battle.
Win a run with only one type of dice other than Starter dice on your dice pool or with only Starter dice in your dice pool.
Win a run without any Epic die on your dice pool.
Enhance an enemy die.
Score at least 3500 points in a run.
Defeat Astrea with Cellarius.
Defeat Astrea.
Defeat Astrea Avatar.
Defeat Corrupted Moonie.
Open Astrea's Heart.
Own a Sentinel on max level.
Prevent a Heart loss using Wave.
Reach Astrea's Heart with Orion.
Move your Orbs 50 times in a single battle.
Win a Ground Zero battle without moving your Orbs.
Make an enemy defeat themselves.
Reach Astrea's Heart with Sothis.
Reach Astrea's Heart with Austra.
Win a run without losing Hearts during battles. Sacrificing a Heart at Shrines doesn't count as Heart lost.
Reach Astrea's Heart with Hevelius.
Spend at least 1500 Star Shards in a single run.
Defeat Corrupted Assembler.
Defeat Smoldering Beast.
Defeat Decayed Star.
Reach Astrea's Heart with Cellarius.
Score at least 2000 points in a run.
Reach Astrea's Heart with Moonie.
Defeat Uncaged Anomaly.
Play at least 10 dice in a single turn.
Defeat Doomed Astronomer.
Defeat Sanctuary Parasite.
Forge a die.
Acquire a Sentinel.
Win your first battle.
Save Meissa, the Antiquarian.