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 Weapon Bags.
Found all Heart Pieces.
Obtained all shards.
Beat the “Frozen Mines” level.
Beat the “Aqueducts Area 2” level.
Beat the “Underground Temple” level.
Found the Combat Armor.
Beat the “Dark Forest Area 2” level.
Found the Dark Armor.
Found the Silver Claymore
Opened all level paths.
Obtained all relics.
Found the Steel Claymore.
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.
Spend 6.000 total orbs on the merchant.
???
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".