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 all shards.
Beat the “Underground Temple” level.
Found the Dark Armor.
Found all Heart Pieces.
Found all Weapon Bags.
Beat the “Frozen Mines” level.
Beat the “Aqueducts Area 2” level.
Found the Silver Claymore
Opened all level paths.
Reach the final level blocked path.
Beat the “Devil’s Peak” level.
Obtained all relics.
Found the Combat Armor.
Found the Steel Claymore.
Play a game session for 2 hours.
Beat the “Aqueducts” level.
Beat the “Dark Forest” level.
Beat the “Dark Forest Area 2” level.
Beat the “Town” level.
Obtained 10.000 orbs (total) in a single game.
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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".