Full list of all 12 Deepest Sword achievements. It takes around 0-1 hour to unlock all of the achievements in the base game on Windows.
The base game contains 11 achievements, and there is 1 DLC pack containing 1 achievements.
Take the upper path with the length 2 sword.
Complete the game in 4 minutes or faster.
Complete the game in 5 minutes or faster.
Find a way to stand on Long the Dragon's head.
Complete the game in 10 minutes or faster.
Stab Long the Dragon's heart with the Deepest Sword.
Stab Long the Dragon with the length 4 sword.
Bypass the last section with the length 4 sword.
Stab Long the Dragon with the length 3 sword.
Stab Long the Dragon with the length 2 sword.
Stab Long the Dragon with the length 1 sword.
Complete the game in under 3 minutes and 30 seconds.