Here is the full list of all 29 Odallus: The Dark Call achievements.
Obtained 10.000 orbs (total) in a single game.
Spend 6.000 total orbs on the merchant.
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Completed the game.
Completed 100% of the game in normal mode.
Obtained all shards.
Beat the “Underground Temple” level.
Found all Heart Pieces.
Found all Weapon Bags.
Found the Steel Claymore.
Found the Silver Claymore
Beat the “Aqueducts Area 2” level.
Opened all level paths.
Obtained all relics.
Found the Dark Armor.
Beat the “Frozen Mines” level.
Play a game session for 2 hours.
Reach the final level blocked path.
Beat the “Devil’s Peak” level.
Beat the “Aqueducts” level.
Beat the “Dark Forest” level.
Found the Combat Armor.
Beat the “Dark Forest Area 2” level.
Beat the “Town” level.
Beat the entire game only using Haggis' Sword.
Beat the entire game only using Hunting Clothes.
Completed the game in less than 2 hours.
Completed the game in "Veteran Mode".
Completed 100% of the game in "Veteran Mode".