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