Here is the full list of all 65 Asura achievements.
True ending
Finish the game in Rakshas Difficulty.
Finish the game in Shaitan Difficulty.
Open an enemy chest.
Reach Level 10.
Cast a shield spell.
Scavenge 100 enemies.
Absorb 100 enemies.
Destroy 100 pots.
Unlock 10 Shastras.
Open a Demon chest.
Clear a guardian room.
Purchase an item from the store on discount.
Scavenge 25 enemies.
Clear an Arena room.
Successfully cast an active skill in the game.
Equip item and fill the slots in inventory including consumables.
Absorb 25 enemies.
Forge an item.
Destroy 25 pots.
Clear a room of enemies.
Kill all bosses!
Finish the game only with default weapons.
Finish the game in Asura Difficulty.
Absorb 1000 enemies.
Collect 15,000 gold.
Scavenge 1000 enemies.
Destroy 1000 Pots.
Defeat the boss without killing any other enemy.
Complete the game without taking any damage.
100% the game.
Purchase every single item from the store.
Collect 500 gold in a single run.
Reincarnate
Clearing a run without consuming any meat or potions.
Unlock 50 Shastras.
Unlock all Shastras.
Forge all items.
Forge all items in a single run.
Select all Yodha shastra in a run.
Select all Dhanush Shastra
Select all Bal Shastra.
Select all Mantra Shastra
Kill all champs!