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