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.
Bypass the last section with the length 4 sword.
Stab Long the Dragon 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.
Stab Long the Dragon's heart with the Deepest Sword.
Complete the game in 10 minutes or faster.
Complete the game in 5 minutes or faster.
Complete the game in 4 minutes or faster.
Find a way to stand on Long the Dragon's head.
Take the upper path with the length 2 sword.
Complete the game in under 3 minutes and 30 seconds.