Here is the full list of all 17 Last Inua achievements.
Finish the game in under 2 hours
Reach the Narwhal temple
Defeat 7 unique enemies in a single playthrough
Find and collect 50% of all spirit runes
Reach the Bear temple
Reach the Raven temple
Escape the from the Tonrar's attack
Warm yourself at a fire after nearly freezing
Find and collect a spirit rune
Defeat an enemy
Teleport through at least 7 unique teleport points in a row
Reach the Trinity temple
Keep the darkness away.
Complete any 5 scenes without dying
Complete any 10 scenes without dying
Finish the game without dying more than 3 times
Find and collect all spirit runes