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