"Skinned Them Alive" Achievement - Resident Evil 1 (PS1)

Yawn 1 knife only.
Retro Achievements Unlocked:
Skinned Them Alive
Defeat Yawn in the Attic in less than a minute only using the knife [No Infinite RL]
Better than Indy
As Chris, defeat Yawn in the Attic [No Infinite RL]