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