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