Asahel is an achievement/trophy in Outlast 2. To achieve it, the player must finish the game on any difficulty in under 4 hours. The average completion time, including unskippable cutscenes and assuming that the player's already familiar with the game's layout, is about 2 hours and 30 minutes.
Asahel was the youngest son of Zeruiah, known for his swiftness. This draws parallel between Asahel's speed and the player's ability to finish the game as quick as possible.