Here is the full list of all 30 Astalon: Tears of the Earth achievements.
Purchased all character specific deals in the shop.
Purchased all of Bram's deals in the shop.
Unlocked all secrets in the game and beat all the unlockable modes.
Reached the top of the tower as the Black Knight.
Killed 5000 monsters.
Finished the game with 100% completion.
Gathered 100% of the tower's items.
Explored 100% of the tower's rooms.
Completed 20% of the bestiary entries.
Completed 50% of the bestiary entries.
Completed 80% of the bestiary entries.
Found the secret ending.
Defeated the Black Knight as the Gargoyle.
Completed all entries in the bestiary.
Defeated all the bosses in the Boss Rush mode.
Collected 50000 orbs.
Defeated the Black Knight.
Defeated the Gorgon Medusa.
Defeated the Gorgon Solaria.
Purchased all of Zeek's deals in the shop.
Killed 1000 monsters.
Unlocked the collector Zeek.
Unlocked the gorgonslayer Bram.
Defeated the Gorgon Gemini.
Collected 10000 orbs.
Purchased all of Kyuli's deals in the shop.
Defeated the Gorgon Volantis.
Purchased all of Arias' deals in the shop.
Purchased all of Algus' deals in the shop.
Defeated the Gorgon Tauros.