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