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 all Heart Pieces.
Found the Dark Armor.
Obtained all shards.
Beat the “Frozen Mines” level.
Found all Weapon Bags.
Reach the final level blocked path.
Opened all level paths.
Beat the “Devil’s Peak” level.
Obtained all relics.
Beat the “Underground Temple” level.
Found the Silver Claymore
Found the Combat Armor.
Beat the “Aqueducts Area 2” level.
Beat the “Dark Forest Area 2” level.
Found the Steel Claymore.
Play a game session for 2 hours.
Beat the “Aqueducts” level.
Beat the “Dark Forest” level.
Beat the “Town” level.
Obtained 10.000 orbs (total) in a single game.
Spend 6.000 total orbs on the merchant.
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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".